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MaxiDirect_2c   03/2010

1.1 Methods
1.1 Table of Methods

* = free, combined, total; PP = powder pack; T = tablet;  
L = liquid; TT = tube test; LR = low range; MR = middle range; HR = high range;  
Vacu-vial

®

 is a registered trade mark of CHEMetrics Inc.

No. Analysis

Reagent

Range

Displayed 

as

Method

 

[nm]

Page

191

Hardness, 

Calcium 2T

tablet

0-500

mg/l CaCO

3

Murexide 

4

560 88

200

Hardness, total T

tablet

2-50

mg/l CaCO

3

Metallphthalein 

3

560 90

201

Hardness, total 

HR T

tablet

20-500

mg/l CaCO

3

Metallphthalein 

3

560 92

205

Hydrazine P

powder

0.05-0.5

mg/l N

2

H

4

4-(Dimethyl-

amino)-

benzaldehyde 

3

430 94

206

Hydrazine L

liquid

0.005-0.6 mg/l N

2

H

4

4-(Dimethyl-

amino)-

benzaldehyde 

3

430 96

207

Hydrazine C

Vacu-vial

0.01-0.7

mg/l N

2

H

4

PDMAB

430 98

210

Hydrogen 

peroxide

tablet

0.03-3

mg/l H

2

O

2

DPD/catalyst 

5

530 100

215

Iodine T

tablet

0.05-3.6

mg/l I

DPD 

5

530 102

220

Iron T

tablet

0.02-1

mg/l Fe

PPST 

3

560 104,106

222

Iron PP

PP

0.02-3

mg/l Fe

1,10-Phenan-

troline 

3

530 104,108

223

Iron (TPTZ) PP

PP

0.02-1.8

mg/l Fe

TPTZ

580 104,110

240

Manganese T

tablet

0.2-4

mg/l Mn

Formaldoxime

530 112

242

Manganese 

LR PP

PP + liquid 0.01-0.7

mg/l Mn

PAN

560 114

243

Manganese 

HR PP

PP + liquid 0,1-18

mg/l Mn

Periodate 

oxidation 

2

530 116

250

Molybdate T

tablet

1-50

mg/l MoO

4

Thioglycolate 

4

430 118

252

Molybdate 

HR PP

PP

0.5-66

mg/l MoO

4

Mercaptoacetic 

acid

430 120

265

Nitrate TT

tube test

1-30

mg/l N

Chromotropic acid 430 122

270

Nitrite T

tablet

0.01-0.5

mg/l N

N-(1-Naphthyl)-

ethylendiamine

2,3

560 124

272

Nitrite LR PP

PP

0.01-0.3

mg/l N

Diazotization

530 126

280

Nitrogen, total 

LR TT

tube test

0.5-25

mg/l N

Persulfate 

digestion method

430 128

281

Nitrogen, total 

HR TT

tube test

5-150

mg/l N

Persulfate 

digestion method

430 130

290

Oxygen, active T

tablet

0.1-10

mg/l O

2

DPD

530 132

292

Oxygen, 

dissolved

Vacu-vial

10-800 

μg/l O

2

Rhodazine D

TM

530 134

300

Ozone (DPD) T

tablet

0.02-2

mg/l O

3

DPD/Glycine 

5

530 136

70

PHMB T

tablet

2-60

mg/l PHMB Buffer/Indicator

560 142

320

Phosphate, T 

ortho LR

tablet

0.05-4

mg/l PO

4

Ammonium-

molybdate 

2,3

660 144, 

146

Summary of Contents for Maxi Direct

Page 1: ...Photometer System axi GB Instruction manual ...

Page 2: ......

Page 3: ...ruction manual before unpacking setting up or using the photometer Please read the method description completely before performing the test Be aware of the risks of using the required reagents by reading the MSDS Material Safety Data Sheets Failure could result in serious injury to the operator or damage to the instrument MSDS www tintometer de CAUTION The accuracy of the instrument is only valid ...

Page 4: ...ne 40 Chlorine with tablet differentiated determination free combined total 42 free Chlorine 44 total Chlorine 45 Chlorine with liquid reagent differentiated determination free combined total 46 free Chlorine 48 total Chlorine 49 Chlorine powder pack differentiated determination free combined total 50 free Chlorine 52 total Chlorine 53 Chlorine dioxide 54 in presence of Chlorine 56 in absence of C...

Page 5: ...ide 100 Iodine 102 Iron 104 Iron with tablet 106 Iron powder pack 108 Iron TPTZ powder pack 110 Manganese with tablet 112 Manganese LR powder pack 114 Manganese HR powder pack 116 Molybdate with tablet 118 Molybdate HR powder pack 120 Nitrate 122 Nitrite with tablet 124 Nitrite LR powder pack 126 Nitrogen total LR 128 Nitrogen total HR 130 Oxygen active 132 Oxygen dissolved 134 Ozone 136 in presen...

Page 6: ...178 Silica HR PP 180 Sodium hypochlorite 182 Sulfate with tablet 184 Sulfate powder pack 186 Sulfide 188 Sulfite 190 Suspended Solids 192 Turbidity 194 Urea 196 Zinc 198 1 2 Important notes 200 1 2 1 Correct use of reagents 200 1 2 2 Cleaning of vials and accessories for analysis 201 1 2 3 Guidelines for photometric measurements 201 1 2 4 Sample dilution techniques 203 1 2 5 Correcting for volume ...

Page 7: ... 3 9 Printing results Infra Red Interface Module optional 215 2 3 10 Perform additional measurements 215 2 3 11 Selecting a new method 216 2 3 12 Measure absorbance 216 2 4 Photometer settings Table of Mode Functions 217 2 4 1 blank because of technical requirements 2 4 2 Instrument basic settings 1 218 2 4 3 Printing of stored results 222 2 4 4 Recall delete stored results 227 2 4 5 Calibration 2...

Page 8: ...ng 258 3 2 Delivery contents 258 3 3 blank because of technical requirements 3 4 Technical data 259 3 5 Abbreviations 260 3 6 Troubleshooting 261 3 6 1 Operating messages in the display error display 261 3 6 2 General 263 3 7 Declaration of CE Conformity 264 ...

Page 9: ...7 MaxiDirect_2c 03 2010 Part 1 Methods ...

Page 10: ...63 Chloramine mono PP PP liquid 0 04 4 50 mg l Cl2 Indophenol 660 34 90 Chloride T tablet 0 5 25 mg l Cl Silver nitrate turbidity 530 38 100 Chlorine T tablet 0 01 6 mg l Cl2 DPD 1 2 3 530 40 42 101 Chlorine L liquid 0 02 4 mg l Cl2 DPD 1 2 3 530 40 46 110 Chlorine PP PP 0 02 2 mg l Cl2 DPD 1 2 530 40 50 120 Chlorine dioxide T tablet 0 05 11 mg l ClO2 DPD Glycine 1 2 530 54 105 Chlorine HR Kl T ta...

Page 11: ... l Fe 1 10 Phenan troline 3 530 104 108 223 Iron TPTZ PP PP 0 02 1 8 mg l Fe TPTZ 580 104 110 240 Manganese T tablet 0 2 4 mg l Mn Formaldoxime 530 112 242 Manganese LR PP PP liquid 0 01 0 7 mg l Mn PAN 560 114 243 Manganese HR PP PP liquid 0 1 18 mg l Mn Periodate oxidation 2 530 116 250 Molybdate T tablet 1 50 mg l MoO4 Thioglycolate 4 430 118 252 Molybdate HR PP PP 0 5 66 mg l MoO4 Mercaptoacet...

Page 12: ...rsulfate UV Oxidation 660 162 329 pH Value LR T tablet 5 2 6 8 Bromocresolpurple5 560 166 330 pH Value T tablet 6 5 8 4 Phenolred5 560 168 331 pH Value L liquid 6 5 8 4 Phenolred5 560 170 332 pH Value HR T tablet 8 0 9 6 Thymolblue 5 560 172 340 Potassium T tablet 0 7 12 mg l K Tetraphenylborate Turbidity4 430 174 350 Silica T tablet 0 05 4 mg l SiO2 Silicomolybdate 2 3 660 176 351 Silica LR PP PP...

Page 13: ...e the amount present in the sample itself These supplementary results make it possible to estimate the actual concentration of the original sample by comparison Literature The reagent formulations are based on internationally recognised test methods Some are described in national and or international guidelines Deutsche Einheitsverfahren zur Wasser Abwasser und Schlammuntersuchung 1 Standard Metho...

Page 14: ... vial from the sample chamber 5 Add one ALKA M PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display as Acid demand to pH 4...

Page 15: ...xiDirect_2c 03 2010 1 1 Methods Notes 1 The terms total Alkalinity Alkalinity m m Value and Acid demand to pH 4 3 are identical 2 For accurate results exactly 10 ml of water sample must be taken for the test ...

Page 16: ...4 Remove the vial from the sample chamber 5 Add one ALKA M PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display as total A...

Page 17: ... results exactly 10 ml of water sample must be taken for the test 3 Conversion table Acid demand to pH 4 3 DIN 38 409 KS4 3 German dH English eH French fH 1 mg l CaCO3 0 02 0 056 0 07 0 1 Carbonate hardness reference Hydrogencarbonate anions Example 10 mg l CaCO3 10 mg l x 0 056 0 56 dH 10 mg l CaCO3 10 mg l x 0 02 0 2 mmol l 4 CaCO3 dH eH fH aH ...

Page 18: ... Remove the vial from the sample chamber 5 Add one ALKA P PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display as Alkalini...

Page 19: ...carbonate m Carbonate 0 Hydroxide 0 Case 2 Alkalinity p 0 and Alkalinity m 2p Hydrogen carbonate m 2p Carbonate 2p Hydroxide 0 Case 3 Alkalinity p 0 and Alkalinity m 2p Hydrogen carbonate 0 Carbonate 2m 2p Hydroxide 2p m 1 1 Methods Notes 1 The terms Alkalinity p p Value and Alkalinity to pH 8 2 are identical 2 For accurate test results exactly 10 ml of water sample must be taken for the test 3 Th...

Page 20: ... clean stirring rod dissolve the tablet 6 Add one ALUMINIUM No 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl gently several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 5 minu...

Page 21: ...gnificant unless the water has fluoride added artificially In this case the following table should be used Fluoride mg l F Displayed value Aluminium mg l Al 0 05 0 10 0 15 0 20 0 25 0 30 0 2 0 05 0 11 0 16 0 21 0 27 0 32 0 4 0 06 0 11 0 17 0 23 0 28 0 34 0 6 0 06 0 12 0 18 0 24 0 30 0 37 0 8 0 06 0 13 0 20 0 26 0 32 0 40 1 0 0 07 0 13 0 21 0 28 0 36 0 45 1 5 0 09 0 20 0 29 0 37 0 48 Example If the...

Page 22: ...od is finished proceed as follows 5 Add the contents of one Vario Hexamine F20 Powder Pack straight from the foil to the same water sample 6 Dissolve the powder using a clean stirring rod 7 Add 1 drop of Vario Aluminum ECR Masking Reagent in the vial marked as blank 8 Add 10 ml of the prepared water sample to the vial this is the blank 9 Add the remaining 10 ml of the prepared water sample in the ...

Page 23: ...ature must be between 20 C and 25 C 3 A low test result may be given in the presence of Fluorides and Polyphosphates The effect of this is generally insignificant unless the water has fluoride added artificially In this case the following table should be used Fluoride mg l F Displayed value Aluminium mg l Al 0 05 0 10 0 15 0 20 0 25 0 30 0 2 0 05 0 11 0 16 0 21 0 27 0 32 0 4 0 06 0 11 0 17 0 23 0 ...

Page 24: ...ng a clean stirring rod 6 Add one AMMONIA No 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 10 minutes After the reaction p...

Page 25: ...development At a temperature below 20 C the reaction period is 15 minutes 4 Sea water samples Ammonia conditioning reagent is required when testing sea water or brackish water samples to prevent precipitation of salts Fill the test tube with the sample to the 10 ml mark and add one level spoonful of Conditioning Powder Mix to dissolve then continue as described in the test instructions 5 Conversio...

Page 26: ...d is finished proceed as follows 6 Add the contents of one Vario Ammonia Cyanurate F10 Powder Pack straight from the foil to each sam ple 7 Close the vials tightly with the caps and shake to mix the contents 8 Press key Wait for a reaction period of 15 minutes After the reaction period is finished proceed as follows 9 Place the vial the blank in the sample chamber making sure that the marks are al...

Page 27: ...ng a total Iron test b add the same iron concentration as determined to the deionised water step 1 The interference will be blanked out successfully Magnesium greater than 6000 mg l CaCO3 Nitrate greater than 100 mg l NO3 N Nitrite greater than 12 mg l NO2 N Phosphate greater than 100 mg l PO4 P Sulfate greater than 300 mg l SO4 Sulfide intensifies the colour Glycine Hydrazine Colour Turbidity Les...

Page 28: ...er Pack straight from the foil into each vial 5 Close the vials tightly with the caps and swirl several times to dissolve the powder 6 Press key Wait for a reaction period of 20 minutes After the reaction period is finished proceed as follows 7 Place the vial the blank in the sample chamber making sure that the marks are l aligned 8 Press ZERO key 9 Remove the vial from the sample chamber 10 Place...

Page 29: ...one drop of 0 1 mol l Sodium thiosulfate for each 0 3 mg l Cl2 in a one litre water sample 3 Iron interferes with the test The interferences will be eliminated as follows Determine the amount of total iron present in the water sample To produce the blank add an iron standard solution with the same iron concentration to the vial point 1 instead of deionised water 4 Conversion mg l NH4 mg l N x 1 29...

Page 30: ...er Pack straight from the foil into each vial 5 Close the vials tightly with the caps and swirl several times to dissolve the powder 6 Press key Wait for a reaction period of 20 minutes After the reaction period is finished proceed as follows 7 Place the vial the blank in the sample chamber making sure that the marks are l aligned 8 Press ZERO key 9 Remove the vial from the sample chamber 10 Place...

Page 31: ...dd one drop of 0 1 mol l Sodium thiosulfate for each 0 3 mg l Cl2 in a one litre water sample 3 Iron interferes with the test The interferences will be eliminated as follows Determine the amount of total iron present in the water sample Add an iron standard solution with the same concentration to the vial point 1 instead of deionised water to produce the blank 4 Conversion mg l NH4 mg l N x 1 29 m...

Page 32: ... stirring rod and dissolve the tablet 6 Add one BORON No 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 20 minutes After th...

Page 33: ...n the correct sequence 2 The sample solution should have a pH value between 6 and 7 3 Interferences are prevented by the presence of EDTA in the tablets 4 The rate of colour development depends on the temperature The temperature of the sample must be 20 C 1 C 5 B H3 BO3 ...

Page 34: ...er and empty it leaving a few drops remaining in the vial 5 Add one DPD No 1 tablet straight from the foil and crush the tablet using a clean stirring rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key The result is shown i...

Page 35: ...oided The analysis must take place immediately after taking the sample 3 The DPD colour development is carried out at a pH value of 6 2 to 6 5 The reagent tablet therefore contains a buffer for the pH adjustment Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before the reagent is added use 0 5 mol l Sulfuric acid resp 1 mol l Sodium hydroxide 4 Exceeding the measuri...

Page 36: ...d determination with the arrow keys and Confirm with key 6 3 Chloramine Mono with NH4 without NH4 with NH4 without NH4 Notes 1 Full colour development temperature The reaction periods indicated in the manual refer to a sample temperature between 18 and 20 C Due to the fact that the reaction period is strongly influenced by sample temperature you have to adjust both reaction periods according to th...

Page 37: ... Powder Pack straight from the foil into the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents approx 20 seconds 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 5 minutes After the reaction period is finished the measurement starts automatically The result is shown in the displ...

Page 38: ... foil into the chloramine vial 6 Close the vial tightly with the cap and swirl several times to mix the contents approx 20 seconds 7 Add 1 drop of Vario Free Ammonia Reagent Solu tion into the ammonia vial Note 1 8 Close the vial tightly with the cap and invert several times to mix the contents 9 Place the chloramine vial in the sample chamber making sure that the marks are aligned 10 Press TEST k...

Page 39: ...ee Ammonia The reading of Monochloramine is shown as mg l Cl2 mg l NH2 Cl mg l N The reading of Ammonia is shown as N Conversion mg l NH4 mg l N 1 29 mg l NH3 mg l N 1 22 Notes 1 Hold the bottle vertically and squeeze slowly 2 To determine the ammonia concentration the difference between the chloramine T1 and the sum of chloramine and ammonia T2 is calculated If T2 exceeds the range limit the foll...

Page 40: ...ing rod and dissolve the tablet 6 Add one CHLORIDE T2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl gently several times until the tablet is dissolved Note 1 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 2 minutes Af...

Page 41: ...to bigger sized particles which can cause false readings 2 High concentrations of electrolytes and organic compounds have different effects on the precipitation reaction 3 Ions which also form deposits with Silver nitrate in acidic media such as Bromides Iodides and Thiocyanates interfere with the analysis 4 Highly alkaline water should if necessary be neutralised using Nitric acid before analysis...

Page 42: ...k 0 02 2 mg l Cl2 The following selection is shown in the display for the differentiated determination of free combined and total Chlorine for the determination of free Chlorine for the determination of total Chlorine Select the desired determination with the arrow keys and Confirm with key Chlorine diff free total diff free total 0 0 1 0 1 1 0 1 1 ...

Page 43: ... pH 7 before the reagent is added use 0 5 mol l Sulfuric acid resp 1 mol l Sodium hydroxide 5 Exceeding the measuring range Concentrations above 10 mg l Chlorine using tablets 4 mg l Chlorine using liquid reagents 2 mg l using powder packs can lead to results showing 0 mg l In this case the water sample must be diluted with water free of Chlorine 10 ml of the diluted sample should be mixed with th...

Page 44: ...ght from the foil and crush the tablet using a clean stirring rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key 10 Remove the vial from the sample chamber 11 Add one DPD No 3 tablet straight from the foil to the same water...

Page 45: ...ST key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts automatically The result is shown in the display in mg l free Chlorine mg l combined Chlorine mg l total Chlorine Notes See page 41 T1 accepted prepare T2 press TEST Countdown 2 00 mg l free Cl mg l comb Cl mg l total Cl ...

Page 46: ...ty it leaving a few drops remaining in the vial 5 Add one DPD No 1 tablet straight from the foil and crush the tablet using a clean stirring rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key The result is shown in the disp...

Page 47: ...ne DPD No 3 tablet straight from the foil and crush the tablets using a clean stirring rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finished the m...

Page 48: ...me size by holding the bottle vertically and squeeze slowly 6 drops of DPD 1 buffer solution 2 drops of DPD 1 reagent solution 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times to mix the contents 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key 10 Remove the vial from the sample chamber 11 Add 3 drops o...

Page 49: ...inished the measurement starts automatically The result is shown in the display in mg l free Chlorine mg l combined Chlorine mg l total Chlorine Notes 1 After use replace the bottle caps securely noting the colour coding 2 Store the reagent bottles in a cool dry place ideally between 6 C and 10 C 3 Also see page 41 T1 accepted prepare T2 press TEST Countdown 2 00 mg l free Cl mg l comb Cl mg l tot...

Page 50: ...ueeze slowly 6 drops of DPD 1 buffer solution 2 drops of DPD 1 reagent solution 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times to mix the contents 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key The result is shown in the display in mg l free Chlorine Notes free and total Chlorine 1 After use replace...

Page 51: ...le vertically and squeeze slowly 6 drops of DPD 1 buffer solution 2 drops of DPD 1 reagent solution 3 drops of DPD 3 solution 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times to mix the contents 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 2 minutes After the reaction p...

Page 52: ...ater sample 6 Close the vial tightly with the cap and swirl several times to mix the contents approx 20 seconds 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key 9 Remove the vial from the sample chamber empty the vial rinse vial and cap several times and then fill the vial with 10 ml of the water sample 10 Add the contents of one VARIO Chlorine TOTAL D...

Page 53: ...ST key Wait for a reaction period of 3 minutes After the reaction period is finished the measurement starts automatically The result is shown in the display in mg l free Chlorine mg l combined Chlorine mg l total Chlorine Notes See page 41 mg l free Cl mg l comb Cl mg l total Cl T1 accepted prepare T2 press TEST Countdown 3 00 ...

Page 54: ... vial from the sample chamber 5 Add the contents of one VARIO Chlorine FREE DPD F10 Powder Pack straight from the foil to the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents approx 20 seconds 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display in mg l free Chlorine Notes See...

Page 55: ...orine TOTAL DPD F10 Powder Pack straight from the foil to the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents approx 20 seconds 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 3 minutes After the reaction period is finished the measurement starts automatically The result is s...

Page 56: ...ction is shown in the display for the determination of Chlorine dioxide in the presence of Chlorine for the determination of Chlorine dioxide in the absence of Chlorine Select the desired determination with the arrow keys and Confirm with key Chlorine dioxide with Cl without Cl with Cl without Cl 2 0 1 ...

Page 57: ...immediately after taking the sample 3 The DPD colour development is carried out at a pH value of 6 2 to 6 5 The reagent tablet therefore contains a buffer for the pH adjustment Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before the tablet is added use 0 5 mol l Sulfuric acid resp 1 mol l Sodium hydroxide 4 Exceeding the measuring range Concentrations above 19 mg ...

Page 58: ...rom the foil and crush the tablet using a clean stirring rod 6 Fill a second clean vial with 10 ml of the water sample 7 Add one GLYCINE tablet straight from the foil and crush the tablet using a clean stirring rod 8 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 9 Transfer the contents of the second vial into the prepared vial 10 Close the vial tightly w...

Page 59: ...D No 3 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 21 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 22 Place the vial in the sample chamber making sure that the marks are aligned 23 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts...

Page 60: ...y 0 38 mg l ClO2 mg l ClO2 Cl x 0 38 ClO2 Cl ClO2 Chlorine dioxide displayed as Chlorine units ClO2 Cl has its origin in swimming poolwater treatment according to DIN 19643 2 The total Chlorine result given includes the contribution of the Chlorine dioxide as Chlorine reading For true total Chlorine value subtract the Chlorine dioxide as Chlorine reading from the quoted total Chlorine reading 3 Al...

Page 61: ...ps remaining in the vial 5 Add one DPD No 1 tablet straight from the foil and crush the tablet using a clean stirring rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key The result is shown in the display as Chlorine dioxide...

Page 62: ...ORINE HR KI tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Add one ACIDIFYING GP tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are...

Page 63: ...61 MaxiDirect_2c 03 2010 1 1 Methods Notes 1 Oxidizing agents interfere as they react in the same way as Chlorine ...

Page 64: ...reactor at a temperature of 150 C 5 CAUTION The vials are hot Remove the tubes from the heating block and allow them to cool to 60 C or less Mix the contents by carefully inverting each tube several times while still warm Then allow the tubes to cool to ambient temperature before measuring Note 2 6 Place the vial the blank Note 3 4 in the sample chamber making sure that the marks are l aligned 7 P...

Page 65: ...nts 3 Suspended solids in the vial lead to incorrect measurements For this reason it is important to place the vials carefully in the sample chamber The precipitate at the bottom of the sample should be not suspended 4 Clean the outside of the vials with a towel Finger prints or other marks will be removed 5 Samples can be measured when the Chloride content does not exceed 1000 mg l 6 In exception...

Page 66: ... reactor at a temperature of 150 C 5 CAUTION The vials are hot Remove the tubes from the heating block and allow them to cool to 60 C or less Mix the contents by carefully inverting each tube several times while still warm Then allow the tubes to cool to ambient temperature before measuring Note 2 6 Place the vial the blank Note 3 4 in the sample chamber making sure that the marks are l aligned 7 ...

Page 67: ...ct measurements For this reason it is important to place the vials carefully in the sample chamber The precipitate at the bottom of the sample should be not suspended 4 Clean the outside of the vials with a towel Finger prints or other marks will be removed 5 Samples can be measured when the Chloride content does not exceed 1000 mg l 6 In exceptional cases compounds contained in the water cannot b...

Page 68: ...preheated reactor at a temperature of 150 C 5 CAUTION The vials are hot Remove the tubes from the heating block and allow them to cool to 60 C or less Mix the contents by carefully inverting each tube several times while still warm Then allow the tubes to cool to ambient temperature before measuring Note 2 6 Place the vial the blank Note 3 4 in the sample chamber making sure that the marks are l a...

Page 69: ...son it is important to place the vials carefully in the sample chamber The precipitate at the bottom of the sample should be not suspended 4 Clean the outside of the vials with a towel Finger prints or other marks will be removed 5 Samples can be measured when the Chloride content does not exceed 10000 mg l 6 In exceptional cases compounds contained in the water cannot be oxidized adequately so re...

Page 70: ... sample measurement 1 Fill a clean vial 24 mm Ø with 10 ml of the filtrated deionised water from Step A close tightly with the cap 2 Place the vial in the sample chamber making sure that the marks are aligned 3 Press ZERO key 4 Remove the vial from the sample chamber and empty it completely 5 Rinse the vial with the filtrated water sample and fill with 10 ml filtrated water sample from Step B 6 Pl...

Page 71: ...n 3 The estimated detection limit is 15 mg L Pt 4 Colour may be expressed as apparent or true colour The apparent colour is defined as the colour of a solution due to dissolved substances and suspended particles in the sample This manual describes the determination of true colour by filtration of the water sample To determine the apparent colour non filtrated deionised water and sample are measure...

Page 72: ...e differentiated determination of free combined and total Copper for the determination of free Copper for the determination of total Copper Select the desired determination with the arrow keys and Confirm with key Note 1 If is displayed at the diffentiated test result see page 262 Copper diff free total diff free total 5 0 1 ...

Page 73: ... the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key 9 Remove the vial from the sample chamber 10 Add one COPPER No 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 11 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 12 Place the vial i...

Page 74: ...ve the vial from the sample chamber 5 Add one COPPER No 1 tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display in mg l free Copper pr...

Page 75: ...m the sample chamber 5 Add one COPPER No 1 tablet and one COPPER No 2 tablet straight from the foil to the water sample and crush the tablets using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display in mg l...

Page 76: ...e contents of one VARIO Cu 1 F10 Powder Pack straight from the foil to the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents Note 3 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts automatically The result is...

Page 77: ...undissolved powder 4 Interferences Cyanide CN Cyanide prevents full colour development Add 0 2 ml Formaldehyde to 10 ml water sample and wait for a reaction time of 4 minutes Cyanide is masked After this perform test as described Multiply the result by 1 02 to correct the sample dilution by Formaldehyde Silver Ag If a turbidity remains and turns black silver interference is likely Add 10 drops of ...

Page 78: ...ontents 6 Add two level spoons No 4 grey of Cyanide 12 replace the cap tightly and invert the vial several times to mix the contents 7 Fill the vial with drops of the same size by holding the bottle vertically and squeeze slowly 3 drops of Cyanide 13 8 Close the vial tightly with the cap and invert several times to mix the contents 9 Place the vial in the sample chamber making sure that the marks ...

Page 79: ...e destroyed by Chlorine are determined by this test 2 In the present of Thiocyanate heavy metal complexes colorants or aromatic amines the cyanide must be separated out by distillation before analysis is performed 3 Store the reagents in closed containers at a temperature of 15 C to 25 C ...

Page 80: ... Remove the vial from the sample chamber 5 Add one CYANURIC ACID tablet straight from the foil to the prepared water sample and crush the tab let using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved Note 2 3 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the disp...

Page 81: ... Cyanuric acid 2 If Cyanuric acid is present a cloudy solution will occur Small single particles are not necessarily caused by Cyanuric acid 3 Dissolve the tablet completely therefore swirl the vial approx 1 minute Un dissolved particles of the tablet can cause results that are too high ...

Page 82: ...6 drops 0 25ml of DEHA solution 6 Close the vial tightly with the cap and swirl several times to mix the contents 7 Add one DEHA tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 8 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 9 Place the vial in the sample chamber making sure that the marks are aligne...

Page 83: ...res at all concentrations Repeat the test procedure but without adding the DEHA solution If the displayed result is above 20 μg l subtract this value from the DEHA test result Substances which reduce Iron III interfere Substances which complex iron strongly may interfere also Substances which may interfere when present in concentrations at Borate as Na2 B4 O7 500 mg l Cobalt 0 025 mg l Copper 8 0 ...

Page 84: ...wirl several times to mix the contents 5 Add 0 20 ml VARIO DEHA 2 Rgt Solution to each vial Note 4 6 Close the vials tightly with the caps and swirl several times to mix the contents 7 Press key Wait for a reaction period of 10 minutes Note 5 After the reaction period is finished proceed as follows 8 Place the vial the blank in the sample chamber making sure that the marks are aligned 9 Press ZERO...

Page 85: ...s 6 Interferences Iron II interferes at all concentrations Repeat the test procedure but without adding the VARIO DEHA Rgt 2 solution If the displayed result is above 20 μg l subtract this value from the DEHA test result Substances which reduce Iron III interfere Substances which complex iron strongly may interfere also Substances who may interfere when present in concentrations at Borate as Na2 B...

Page 86: ...ned 3 Press ZERO key 4 Remove the vial from the sample chamber 5 Add exactly 2 ml SPADNS reagent solution Note 4 to the water sample Caution Vial is filled up to the top Note 8 6 Close the vial tightly with the cap and swirl several times to mix the contents 7 Place the vial in the sample chamber making sure that the marks are aligned Press TEST key The result is shown in the display in mg l Fluor...

Page 87: ...samples to be tested should have the same temperature 1 C 4 As the test result is highly dependent on exact sample and reagent volumes the sample and reagent volumes should always be metered by using a 10 ml resp 2 ml volumetric pipette class A 5 The accuracy of the test methods decreases above a level of 1 2 mg l Fluoride Although the results are sufficiently accurate for most applications even m...

Page 88: ...he marks are aligned 5 Press ZERO key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts automatically 6 Remove the vial from the sample chamber 7 Add 2 ml of the water sample to the prepared vial Caution Vial is filled up to the top Note 4 8 Close the vial tightly with the cap and swirl several times 5x to mix the contents 9 Place the vial in the ...

Page 89: ...lerance of the method is increasing with higher concentrations When diluting samples this should be take into account always measuring in the first third of the range 3 This method was developed from a volumetric procedure for the determination of calcium Due to undefined conditions the deviations from the standardised method may be greater 4 It is convenient to use special vials with larger volum...

Page 90: ...g rod and dissolve the tablet completely 6 Add one CALCIO H No 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl gently several times until the tablet is completely dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period ...

Page 91: ...e must be taken for the test 4 This method was developed from a volumetric procedure for the determination of Calcium Hardness Due to undefined conditions the deviations from the standardised method may be greater 5 The tolerance of the method is increasing with higher concentrations When diluting samples this should be taken in account always measuring in the first third of the range 6 Interferen...

Page 92: ...et straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 5 minutes After the reaction period is finished the measurement starts automatically The ...

Page 93: ...amples must be adjusted between pH 4 and pH 10 before the tablet is added use 1 mol l Hydrochloric acid resp 1mol l Sodium hydroxide 2 Conversion table mg l CaCO3 dH fH eH 1 mg l CaCO3 0 056 0 10 0 07 1 dH 17 8 1 78 1 25 1 fH 10 0 0 56 0 70 1 eH 14 3 0 80 1 43 3 CaCO3 dH eH fH aH ...

Page 94: ...HARDCHECK P tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 5 minutes After the reaction period is finished the measurement starts au...

Page 95: ...amples must be adjusted between pH 4 and pH 10 before the tablet is added use 1 mol l Hydrochloric acid resp 1mol l Sodium hydroxide 2 Conversion table mg l CaCO3 dH fH eH 1 mg l CaCO3 0 056 0 10 0 07 1 dH 17 8 1 78 1 25 1 fH 10 0 0 56 0 70 1 eH 14 3 0 80 1 43 3 CaCO3 dH eH fH aH ...

Page 96: ...st powder Note 3 to the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents 7 Press key Wait for a reaction period of 10 minutes After the reaction period is finished proceed as follows 8 The slight turbidity that occurs when the reagent is added must be removed by filtration Note 4 9 Place the vial in the sample chamber making sure that the marks are ali...

Page 97: ...level spoon 4 Qualitative folded filter papers for medium precipitates are recommended 5 In order to check whether the reagent has aged if it has been stored for a lengthy period perform the test as described above using tap water If the result is above the detection limit of 0 05 mg l you should only use the reagent with reservations as there may be a major deviation in results 6 There is an opti...

Page 98: ...he marks are aligned 5 Press ZERO key 6 Remove the vial from the sample chamber 7 Fill the second clean vial with 10 ml of the water sample this is the sample 8 Add 1 ml VARIO Hydra 2 Rgt Solution into the vial 9 Close the vial tightly with the cap and swirl several times to mix the contents 10 Place the vial the blank in the sample chamber making sure that the marks are aligned 11 Press TEST key ...

Page 99: ...ble that the test result increases by 20 Morpholine does not interfere up to 10 mg l Highly coloured or turbid samples Mix 1 part deionised water with 1 part household bleach Add 1 drop of this mixture into 25 ml water sample and mix Use 10 ml prepared sample in place of deionised water in point 1 Note at point 7 use the unprepared water sample Principle Hydrazine is oxidised by household bleach C...

Page 100: ...g the vial against the side of the sample container The Vacu vial breaks at the neck and the vial fills automatically A small volume of inert gas remains in the Vacu vial 6 Mix the contents of the Vacu vial by inverting it several times allowing the bubble to move from one end to the other Dry the outside of the vial 7 Place the Vacu vial in the sample chamber 8 Press TEST key Wait for a reaction ...

Page 101: ...d the original test instruction and the MSDS delivered with the test before performing the test MSDS also available at www chemetrics com 3 Vacu vials is a registered trade mark of the company CHEMetrics Inc Calverton U S A 4 There is an option to change the unit from mg l to μg l mg l µg l ...

Page 102: ... HYDROGENPEROXIDE LR tablet straight from the foil and crush the tablet using a clean stir ring rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finishe...

Page 103: ...ed The analysis must take place immediately after taking the sample 3 The DPD colour development is carried out at a pH value of 6 2 to 6 5 The reagent tablet therefore contains a buffer for the pH adjustment Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before the tablet is added use 0 5 mol l Sulfuric acid resp 1 mol l Sodium hydroxide 4 Exceeding the measuring r...

Page 104: ...empty the vial leaving a view drops in 5 Add one DPD No 1 tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key The result is shown ...

Page 105: ...103 MaxiDirect_2c 03 2010 1 1 Methods Notes 1 Oxidizing reagents such as Chlorine Bromine etc interfere as they react in the same way as Iodine ...

Page 106: ...f all dissolved iron and most undissolved forms of iron Iron total with Vario Powder Pack 0 02 1 8 mg l Fe Determination of all dissolved iron and most undissolved forms of iron most undissolved iron oxides are recovered by the reagent This information refers to analysis of the water sample without digestion Further information can be found in the method notes 2 0 2 2 2 2 2 3 2 ...

Page 107: ...l of this pre treated solution is used for the following analysis Perform as described by the selected test method 2 Water which has been treated with organic compounds like corrosion inhibitors must be oxidised where necessary to break down the iron Therefore add 1 ml concentrated sulfuric acid and 1 ml concentrated nitric acid to 100 ml water sample and boil to approx half volume After cooling d...

Page 108: ...t straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 5 minutes After the reaction period is finished the measurement starts automatically The r...

Page 109: ...nes the total dissolved Iron as Fe2 and Fe3 2 The IRON II LR tablet is used for differentiation as described above instead of the IRON LR tablet 3 For the determination of total dissolved and undissolved iron digestion is required An example is described on page 105 ...

Page 110: ...ents of one Vario Ferro F10 Powder Pack straight from the foil to the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents Note 4 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 3 minutes Note 5 After the reaction period is finished the measurement starts automatically The result ...

Page 111: ...requires prior digestion use mild vigorous or Digesdahl digestion e g for digestion with acid see page 105 3 Very strong alkaline or acidic water samples must be adjusted to a pH value between 3 and 5 before analysis 4 Accuracy is not affected by undissolved powder 5 Water samples containing visible rust should be allowed to react for at least five minutes ...

Page 112: ... vial 4 Close the vials tightly with the caps and swirl several times to mix the contents 5 Press key Wait for a reaction period of 3 minutes After the reaction period is finished proceed as follows 6 Place the vial the blank in the sample chamber making sure that the marks are aligned 7 Press ZERO key 8 Remove the vial from the sample chamber 9 Place the vial the sample in the sample chamber ma k...

Page 113: ...between pH 3 and pH 8 before the reagent is added use 0 5 mol l Sulfuric acid resp 1 mol l Sodium hydroxide 4 Interferences When interferences occur colour development is inhibited or a precipitate is formed The values below refer to a standard with an iron concentration of 0 5 mg l The following substances do not interfere when present up to the levels given Substance no inerference to Cadmium 4 ...

Page 114: ...n stirring rod and dissolve the tablet 6 Add one MANGANESE LR 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 5 minutes Afte...

Page 115: ...113 MaxiDirect_2c 03 2010 1 1 Methods Note 1 Mn MnO4 KMnO4 ...

Page 116: ...t solution 6 Close the vials tightly with the caps and swirl several times to mix the contents 7 Fill each vial with drops of the same size by holding the bottle vertically and squeeze slowly 21 drops of PAN Indicator solution 8 Close the vials tightly with the caps and swirl several times to mix the contents 9 Press key Wait for a reaction period of 2 minutes Note 4 After the reaction period is f...

Page 117: ...dding the Vario Ascorbic Acid powder pack add additionally 10 drops of Rochelle Salt Solution 3 After addition of the reagent solution Alkaline Cyanide a cloudy or turbid solution may form in some water samples The turbidity should disappear after point 7 4 Water samples containing more than 5 mg l iron should be allowed to react for at least 10 minutes 5 Conversion mg l MnO4 mg l Mn x 2 17 6 Mn M...

Page 118: ... Close the vial tightly with the cap and swirl several times to mix the contents 7 Add the contents of one VARIO Sodium Periodate F10 Powder Pack straight from the foil to the same water sample 8 Close the vial tightly with the cap and swirl several times to mix the contents 9 Place the vial in the sample chamber making sure that the marks are aligned 10 Press TEST key Wait for a reaction period o...

Page 119: ...apacity of the reagents and requires sample pre treatment If samples were acidified for storing adjust the pH between 4 and 5 with 5 mol l 5 N Sodium hydroxide before test Do not exceed pH 5 as manganese may precipitate 3 Interferences Interfering substance Interference level Calcium greater than 700 mg l Chloride greater than 70 000 mg l Iron greater than 5 mg l Magnesium greater than 100 000 mg ...

Page 120: ...traight from the foil to the water sample and crush the tablet using a clean stirring rod 7 Add one MOLYBDATE HR No 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 8 Dissolve the tablets using a clean stirring rod 9 Rinse out the vial with the prepared water sample and then fill to the 10 ml mark 10 Close the vial tightly with the cap 11 Pla...

Page 121: ...must be added in the correct sequence 2 Under test conditions pH 3 8 3 9 iron does not interfere nor do other metals at levels likely to be found in industrial water systems 3 Conversions mg l Mo mg l MoO4 x 0 6 mg l Na2 MoO6 mg l MoO4 x 1 3 4 MoO4 Mo Na2 MoO4 ...

Page 122: ...ntents of one Vario Molybdenum HR 2 F10 Powder Pack straight from the foil to the same water sample 8 Close the vial tightly with the cap and swirl several times to mix the contents 9 Add the contents of one Vario Molybdenum HR 3 F10 Powder Pack straight from the foil to the same water sample 10 Close the vial tightly with the cap and swirl several times to mix the contents 11 Place the vial in th...

Page 123: ...early 7 with 1 mol l Nitric acid or 1 mol l Sodium hydroxide 3 Concentrations above 10 mg l Cu causes too high test values if the reaction time of 5 minutes is increased So it is very important to perform the test procedure as described 4 Substances which may interfere when present in concentrations at Aluminium 50 mg l Chromium 1000 mg l Iron 50 mg l Nickel 50 mg l Nitrite all levels 5 MoO4 Mo Na...

Page 124: ... tightly with the caps and invert gently several times 10 x to mix the contents Note 1 5 Press key Wait for a reaction period of 5 minutes 6 After the reaction period is finished proceed as follows 7 Place the vial the blank in the sample chamber making sure that the marks are l aligned 8 Press ZERO key 9 Remove the vial from the sample chamber 10 Place the vial the sample in the sample chamber ma...

Page 125: ...123 MaxiDirect_2c 03 2010 1 1 Methods Notes 1 Some solids may not dissolve 2 Conversion mg l NO3 mg l N x 4 43 3 N NO3 ...

Page 126: ...traight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 10 minutes After the reaction period is finished the measurement starts automatically The res...

Page 127: ...y III Iron III Lead Mercury I Silver Chloroplatinate Metavanadate and Bismuth Copper II ions may cause lower test results as they accelerate the decomposition of the Diazonium salt It is unlikely in practice that these interfering ions will occur in such high concentrations that they cause significant reading errors 2 Conversion mg l NO2 mg l N x 3 29 3 N NO2 ...

Page 128: ... contents of one VARIO Nitri 3 Powder Pack straight from the foil to the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 20 minutes After the reaction period is finished the measurement starts automatically The result is shown i...

Page 129: ...ric Bismuth Chloroplatinate Ferric Lead Mercurous Metavanadate Silver ions interfere by causing precipitation In samples with very high concentrations of Nitrate 100 mg L N a small amount of Nitrite will be found Such high levels of Nitrate appear to undergo a slight amount of reduction to Nitrite either spontaneously or during the reaction time of the test 2 N NO2 ...

Page 130: ...ne Vario TN Reagent A Powder Pack to each vial Note 2 8 Close the vials with the caps and shake to mix the contents at least 15 seconds 9 Press key Wait for a reaction period of 3 minutes After the reaction period is finished proceed as follows 10 Open the digestion vials and add the contents of one Vario TN Reagent B Powder Pack to each vial Note 2 11 Close the vials with the caps and shake to mi...

Page 131: ...xactly 30 minutes 8 The reagent will not completely dissolve 9 Hold the vial in a vertical position with the cap pointing up Turn the vial upside down Wait for all of the solution to flow down to the cap Return the vial to the upright position Wait for all the solution to flow to the bottom of the vial This process is one inversion 10 inversions approx 30 seconds 10 After zero calibration with the...

Page 132: ...ario TN Reagent A Powder Pack to each vial Note 2 8 Close the vials with the caps and shake to mix the contents at least 15 seconds 9 Press key Wait for a reaction period of 3 minutes After the reaction period is finished proceed as follows 10 Open the digestion vials and add the contents of one Vario TN Reagent B Powder Pack to each vial Note 2 11 Close the vials with the caps and shake to mix th...

Page 133: ...ly 30 minutes 8 The reagent will not completely dissolve 9 Hold the vial in a vertical position with the cap pointing up Turn the vial upside down Wait for all of the solution to flow down to the cap Return the vial to the upright position Wait for all the solution to flow to the bottom of the vial This process is one inversion 10 inversions approx 30 seconds 10 After zero calibration with the bla...

Page 134: ...traight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts automatically The resu...

Page 135: ...ve Oxygen is a synonym for a common disinfectant based on Oxygen in Swimming Pool Treatment 1 When preparing the sample the lost of Oxygen e g by pipetting or shaking must be avoided 2 The analysis must take place immediately after taking the sample ...

Page 136: ... lower edge of the sample contai ner The Vacu vial breaks at the neck and the vial fills automatically A small volume of inert gas remains in the Vacu vial 6 Remove the Vacu vial point downwards from the sample container immediately As the contents of the vial has a higher density than water it is important to remove the vial from the sam ple container within 5 seconds to prevent any loss of reage...

Page 137: ...d is adapted from CHEMetrics 2 Read the original test instruction and the MSDS delivered with the test before performing the test MSDS also available at www chemetrics com 3 Vacu vials is a registered trade mark of the company CHEMetrics Inc Calverton U S A ...

Page 138: ...following selection is shown in the display for the determination of Ozone in the presence of Chlorine for the determination of Ozone in the absence of Chlorine Select the desired method with the arrow keys and Confirm with key Ozon with Cl without Cl with Cl without Cl 0 0 3 ...

Page 139: ...er for the pH adjustment Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before the tablet is added use 0 5 mol l Sulfuric acid resp 1 mol l Sodium hydroxide 4 Turbidity can lead to errors The use of the DPD No 1 tablet in samples with high Calcium ion content and or high conductivity can lead to turbidity of the sample and therefore incorrect measurements it is not ...

Page 140: ...ng rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts automatically 10 Remove the vial from the sample chamber empty the...

Page 141: ...ts of the second vial into the prepared vial 16 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 17 Place the vial in the sample chamber making sure that the marks are aligned 18 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts automatically The result is shown in the display in mg l Ozone...

Page 142: ...ablet and one DPD No 3 tablet straight from the foil and crush the tablets using a clean stirring rod 6 Add water sample to the 10 ml mark 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is fin...

Page 143: ...141 MaxiDirect_2c 03 2010 ...

Page 144: ...Remove the vial from the sample chamber 5 Add one PHMB PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display in mg l PHMB p...

Page 145: ...tirring rods with a laboratory detergent see chapter 1 2 2 Cleaning of vials and accessories for analysis Rinse vials and caps thoroughly with tap water and then with deionised water 3 The test result is influenced by Hardness and Total Alkalinity The calibration of this method was done using water with the following concentration Ca Hardness 200 mg l CaCO3 Total Alkalinity 120 mg l CaCO3 ...

Page 146: ... PO4 Determination of ortho Phosphate ions Phosphat 1 ortho with Vacu vials 5 40 mg l PO4 Determination of ortho Phosphate ions Phosphat 2 ortho with Vacu vials 0 05 5 mg l PO4 Determination of ortho Phosphate ions Phosphate acid hydrolizable with Vario Tube Test 0 02 1 6 mg l P Determination of ortho Phosphate ions condensed inorganic Phosphates Phosphate total with Vario Tube Test 0 02 1 1 mg l ...

Page 147: ...21 and 327 the ortho Phosphate ions react with the Vanadate molybdate reagent under acid conditions to form a yellow coloured product Notes only for tube tests and tests with powder packs 323 324 325 326 1 Application for water wastewater and seawater 2 Highly buffered samples or samples with extreme pH values should be adjusted between pH 2 and pH 10 before analysis with 1 mol l Hydrochloric acid...

Page 148: ...using a clean stirring rod 6 Add one PHOSPHATE No 2 LR tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 10 minutes After the reac...

Page 149: ...sequence 3 The test sample should have a pH Value between 6 and 7 4 Interferences Higher concentrations of Cu Ni Cr III V V and W VI interfere due to their colour Silicates do not interfere masked by Citric acid in the tablets 5 see also page 145 6 Conversion mg l P mg l PO4 x 0 33 mg l P2 O5 mg l PO4 x 0 75 7 PO4 P P2 O5 ...

Page 150: ... using a clean stirring rod 6 Add one PHOSPHATE HR P2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 10 minutes After the rea...

Page 151: ... samples under 5 mg l PO4 it is reccommended to analyse the water sample with method 320 Posphate LR ortho with Tablet 2 Only ortho Phosphate ions react 3 see also page 145 4 Conversions mg l P mg l PO4 x 0 33 mg l P2 O5 mg l PO4 x 0 75 5 PO4 P P2 O5 ...

Page 152: ...ARIO Phosphate Rgt F10 Powder Pack straight from the foil to the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents approx 10 15 sec Note 1 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts automatically The re...

Page 153: ...151 MaxiDirect_2c 03 2010 1 1 Methods Notes 1 The reagent does not dissolve completely 2 see also page 145 3 Conversions mg l P mg l PO4 x 0 33 mg l P2 O5 mg l PO4 x 0 75 4 PO4 P P2 O5 ...

Page 154: ...of one VARIO Phosphate Rgt F10 Powder Pack straight from the foil to the water sample Note 1 6 Close the vial tightly with the cap and swirl several times to mix the contents approx 10 15 sec Note 2 7 Place the vial in the sample chamber making sure that the l marks are aligned 8 Press TEST key Wait for a reaction period of 2 minutes After the reaction period is finished the measurement starts aut...

Page 155: ...Direct_2c 03 2010 1 1 Methods Notes 1 Use a funnel to add the reagent 2 The reagent does not dissolve completely 3 see also page 145 4 Conversions mg l P mg l PO4 x 0 33 mg l P2 O5 mg l PO4 x 0 75 5 PO4 P P2 O5 ...

Page 156: ...gainst the side of the sample container The Vacu vial breaks at the neck and the vial fills au tomatically A small volume of inert gas remains in the Vacu vial 6 Mix the contents of the Vacu vial by inverting it several times allowing the bubble to move from one end to the other Dry the outside of the vial 7 Place the Vacu vial in the sample chamber 8 Press TEST key Wait for a reaction period of 5...

Page 157: ...instruction and the MSDS delivered with the test before performing the test MSDS also available at www chemetrics com 3 Vacu vials is a registered trade mark of the company CHEMetrics Inc Calverton U S A 4 Only ortho Phosphate ions react 5 Sulfide Thiosulfate and Thiocyanate cause low test results 6 PO4 P P2 O5 ...

Page 158: ...irl several times to mix the contents 7 Place one Vacu vial in the sample container Snap the tip by pressing the vial against the side of the sample container The Vacu vial breaks at the neck and the vial fills automatically A small volume of inert gas remains in the Vacu vial 8 Mix the contents of the Vacu vial by inverting it several times allowing the bubble to move from one end to the other Dr...

Page 159: ...instruction and the MSDS delivered with the test before performing the test MSDS also available at www chemetrics com 3 Vacu vials is a registered trade mark of the company CHEMetrics Inc Calverton U S A 4 Only ortho Phosphate ions react 5 Sulfide Thiosulfate and Thiocyanate cause low test results 6 PO4 P P2 O5 ...

Page 160: ...o the vial 6 Close the vial with the cap and invert gently several times to mix the contents 7 Place the vial in the sample chamber making sure that the l marks are aligned 8 Press ZERO key 9 Remove the vial from the sample chamber 10 Add the contents of one VARIO Phosphate Rgt F10 Powder Pack straight from the foil to the vial Note 2 11 Close the vial tightly with the cap and swirl several times ...

Page 161: ... safety precautions and a good lab technique should be used during the whole procedure 2 Use a funnel to add the reagent 3 The reagent does not dissolve completely 4 see also page 145 5 Conversions mg l PO4 mg l P x 3 07 mg l P2 O5 mg l P x 2 29 6 PO4 P P2 O5 ...

Page 162: ... vial and add 2 ml 1 54 N Sodium Hydroxide Solution to the vial 7 Close the vial with the cap and invert gently several times to mix the contents 8 Place the vial in the sample chamber making sure that the l marks are aligned 9 Press ZERO key 10 Remove the vial from the sample chamber 11 Add the contents of one VARIO Phosphate Rgt F10 Powder Pack straight from the foil to the vial Note 2 12 Close ...

Page 163: ... safety precautions and a good lab technique should be used during the whole procedure 2 Use a funnel to add the reagent 3 The reagent does not dissolve completely 4 see also page 145 5 Conversions mg l PO4 mg l P x 3 07 mg l P2 O5 mg l P x 2 29 6 P PO4 P2 O5 ...

Page 164: ...ersulfate F10 Powder Pack straight from the foil to the digestion vial 6 Close the digestion vial tightly with the cap and swirl until the reagent is dissolved completely 7 Insert the UV lamp into the digestion vial Note 3 4 5 CAUTION Wear UV safety goggles 8 Switch the UV lamp on and wait for a reaction period of 10 minutes 9 After the reaction period is finished switch the UV lamp off and remove...

Page 165: ...actual phosphonate concentration using the appropriate factor from table 2 Notes 1 Rinse all glassware with 1 1 Hydrochloric acid first and then rinse with deionised water Do not use detergents with phosphates 2 During UV digestion Phosphonates are converted to Ortho Phosphates This step is normally completed in 10 minutes High organic loaded samples or a weak lamp can cause incomplete phosphate c...

Page 166: ...ge mg L Phosphonate Sample volume in ml Factor 0 2 5 50 0 1 0 5 0 25 0 2 0 12 5 10 0 5 0 25 5 1 0 0 125 1 5 0 Table 2 Phosphonate type Conversion factor for active phosphonate PBTC 2 840 NTP 1 050 HEDPA 1 085 EDTMPA 1 148 HMDTMPA 1 295 DETPMPA 1 207 HPA 1 490 ...

Page 167: ...ide 100 mg l Calcium 5000 mg l CDTA 100 mg l Chloride 5000 mg l Chromate 100 mg l Copper 100 mg l Cyanide 100 mg l increase the UV digestion to 30 minutes Diethanoldithiocarbamate 50 mg l EDTA 100 mg l Iron 200 mg l Nitrate 200 mg l NTA 250 mg l Orthophosphate 15 mg l Phosphite and organophosphorus compounds reacts quantitatively Meta and Polyphosphates do not interfere Silica 500 mg l Silicate 10...

Page 168: ...ial from the sample chamber 5 Add one BROMOCRESOLPURPLE PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display as pH value p...

Page 169: ...lausibility test pH meter is recommended 3 The accuracy of the colorimetric determination of pH values depends on various boundary conditions buffer capacity of the sample salt contents etc 4 Salt error Correction of test results average values for samples with salt contents of Indicator Salt content Bromcresolpurple 1 molar 0 26 2 molar 0 33 3 molar 0 31 The values of Parson and Douglas 1926 are ...

Page 170: ... vial from the sample chamber 5 Add one PHENOL RED PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display as pH value prepar...

Page 171: ... produce results inside the measuring range A plausibility test pH meter is recommended 4 The accuracy of the colorimetric determination of pH values depends on various boundary conditions buffer capacity of the sample salt contents etc 5 Salt error Correction of test results average values for samples with salt contents of Indicator Salt content Phenol red 1 molar 0 21 2 molar 0 26 3 molar 0 29 T...

Page 172: ... Remove the vial from the sample chamber 5 Fill the vial with drops of the same size by holding the bottle vertically and squeeze slowly 6 drops of PHENOL RED solution 6 Close the vial tightly with the cap and swirl several times to mix the contents 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display as pH value prepare ...

Page 173: ...stal of Sodiumthiosulfate Na2 S2 O3 5 H2 O to the sample before adding the PHENOL RED solution PHENOL RED tablets already contain Thiosulfate 2 Due to differing drop sizes results can show a discrepancy in accuracy by comparison with tablets This can be minimised by using a pipette 0 18 ml PHENOLRED solution is equivalent to 6 drops 3 After use replace the bottle cap securely 4 Store the reagent i...

Page 174: ...he vial from the sample chamber 5 Add one THYMOLBLUE PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display as pH value prep...

Page 175: ...ausibility test pH meter is recommended 3 The accuracy of the colorimetric determination of pH values depends on various boundary conditions buffer capacity of the sample salt contents etc 4 Salt error Correction of test results average values for samples with salt contents of Indicator Salt content Thymolblue 1 molar 0 22 2 molar 0 29 3 molar 0 34 The values of Parson and Douglas 1926 are based o...

Page 176: ...ve the vial from the sample chamber 5 Add one Potassium T tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display in mg l Potassium prep...

Page 177: ...175 MaxiDirect_2c 03 2010 1 1 Methods Notes 1 If Potassium is present a cloudy solution will appear Single particles are not necessarily caused by Potassium ...

Page 178: ... minutes After the reaction period is finished proceed as follows 8 Add one SILICA PR tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 9 Add one SILICA No 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod 10 Close the cap tightly and swirl several times until the tablets are dissolved 11 Pl...

Page 179: ...tablets must be added in the correct sequence 2 Phosphate ions do not interfere under the given reaction conditions 3 If Phosphate is known to be absent the addition of the SILICA PR tablet may be omitted 4 Conversion mg l Si mg l SiO2 x 0 47 5 SiO2 Si ...

Page 180: ...s finished proceed as follows 5 Add the contents of one Vario Silica Citric Acid F10 Powder Pack straight from the foil into each vial 6 Close the vials tightly with the caps and swirl several times to mix the contents 7 Press key Wait for a reaction period of 1 minute Note 3 After the reaction period is finished proceed as follows 8 Place the vial the blank in the sample chamber making sure that ...

Page 181: ...minutes are required 3 The given reaction time of 1 minute refers to a water sample temperature of 20 C At 30 C a reaction time of 30 seconds at 10 C a reaction time of 2 minutes are required 4 Interferences Substance Interference Iron large amounts interfere Phosphate does not interfere at concentrations less than 50 mg l PO4 at 60 mg l PO4 the interference is approx 2 at 75 mg l PO4 the interfer...

Page 182: ... the foil to the same water sample Note 2 8 Close the vial tightly with the cap and swirl several times to mix the contents 9 Press key Wait for a reaction period of 10 minutes After the reaction period is finished proceed as follows 10 Add the contents of one Vario Silica Citric Acid F10 Powder Pack straight from the foil to the water sample Note 3 11 Close the vial tightly with the cap and swirl...

Page 183: ...less than 50 mg l PO4 at 60 mg l PO4 the interference is approx 2 at 75 mg l PO4 the interference is approx 11 Sulfide interferes at all levels Occasionally water samples contain forms of silica which reacts very slowly with Molybdate The nature of these forms is not known A pre treatment with Sodium hydrogencarbonate and then with Sulfuric Acid will make these forms reactive to Molybdate pre trea...

Page 184: ...a 100 ml beaker and dilute to the 100 ml mark with chlorine free water Mix thoroughly Performing test procedure 1 Fill a clean vial 24 mm Ø with 10 ml of the prepared water sample close tightly with the cap 2 Place the vial in the sample chamber making sure that the marks are aligned 3 Press ZERO key 4 Remove the vial from the sample chamber 5 Add one CHLORINE HR KI tablet straight from the foil t...

Page 185: ...ite The material has a very strong alkalinity and can cause corrosion Contact with eyes skin and clothes etc has to be avoided Refer to the detailed information the producer supplied with the product 2 The tablets must be added in the correct sequence 3 This method provides a fast and simple test The test can be performed on site but the result will not be as precise as a laboratory method 4 By st...

Page 186: ...ove the vial from the sample chamber 5 Add one SULFATE T tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display in mg l Sulfate prepare...

Page 187: ...185 MaxiDirect_2c 03 2010 1 1 Methods Notes 1 If Sulfate is present a cloudy solution will appear ...

Page 188: ...ntents of one VARIO Sulpha 4 F10 Powder Pack straight from the foil to the water sample 6 Close the vial tightly with the cap and swirl several times to mix the contents 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 5 minutes After the reaction period is finished the measurement starts automatically The result is shown ...

Page 189: ...187 MaxiDirect_2c 03 2010 1 1 Methods Note 1 If Sulfate ions are present a cloudy solution will appear ...

Page 190: ...n stirring rod and dissolve the tablet 6 Add one SULFIDE No 2 tablet to the same water sample and crush the tablet using a clean stirring rod 7 Close the vial tightly with the cap and swirl several times until the tablets are dissolved 8 Place the vial in the sample chamber making sure that the marks are aligned 9 Press TEST key Wait for a reaction period of 10 minutes After the reaction period is...

Page 191: ...ich react with DPD do not interfere with the test 3 To avoid loss of Sulfide collect the sample carefully with a minimum of aeration It is essential to test the sample immediately after collection 4 The sample temperature should be 20 C A different temperature can lead to higher or lower results 5 Conversion H2 S mg l S x 1 06 6 S H2 S ...

Page 192: ...straight from the foil to the water sample and crush the tablet using a clean stirring rod 6 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key Wait for a reaction period of 5 minutes After the reaction period is finished the measurement starts automatically The res...

Page 193: ...191 MaxiDirect_2c 03 2010 1 1 Methods Notes 1 SO3 Na2 SO3 ...

Page 194: ...le chamber making sure that the marks are aligned 3 Press ZERO key 4 Remove the vial from the sample chamber and empty the vial completely 5 Stir the blended water sample Immediately rinse the vial with the water sample and fill with 10 ml water sample 6 Place the vial in the sample chamber making sure that the marks are aligned 7 Press TEST key The result is shown in the display in mg l TSS Total...

Page 195: ...imetric determination of a water sample The result can be used to calibrate the photometer with the same water sample 3 The estimated detection limit is 20 mg L TSS 4 Collect water samples in clean plastic or glass bottles and analyse the water sample as soon as possible It is possible to store the sample at 4 C for 7 days Before measurement warm up the sample to the temperature at collection time...

Page 196: ...ove the vial from the sample chamber and empty the vial completely 5 Stir the water sample Immediately rinse the vial with the water sample and fill with 10 ml water sample 6 Close the vial tightly with the cap and swirl gently several times 7 Place the vial in the sample chamber making sure that the marks are aligned 8 Press TEST key The result is shown in the display in FAU prepare Zero press ZE...

Page 197: ...er samples in clean plastic or glass bottles and analyse the water sample as soon as possible It is possible to store the sample at 4 C for 48 hours Before measurement warm up the sample to the temperature at collection time Temperature differences between measurement and sample collection can effect the turbidity of the sample 4 Colour interferes if light is absorbed at 530 nm For strong coloured...

Page 198: ... the cap and swirl several times to mix the contents 7 Add 1 drop of Urea Reagent 2 Urease to the same water sample Note 9 8 Close the vial tightly with the cap and swirl several times to mix the contents 9 Press key Wait for a reaction period of 5 minutes After the reaction period is finished proceed as follows 10 Add one AMMONIA No 1 tablet straight from the foil to the prepared water sample and...

Page 199: ...e measuring range In this case the water sample should be diluted with Urea free water and remeasured 4 The tablets must be added in the correct sequence 5 The AMMONIA No 1 tablet will only dissolve completely after the AMMONIA No 2 tablet has been added 6 Do not store reagent 1 Urease below 10 C granulation is possible Store reagent 2 Urease in the refrigerator at a temperature of 4 C to 8 C 7 Am...

Page 200: ...aligned 5 Press ZERO key Wait for a reaction period of 5 minutes After the reaction period is finished the measurement starts automatically 6 Remove the vial from the sample chamber 7 Add one EDTA tablet straight from the foil to the prepared vial and crush the tablet using a clean stirring rod 8 Close the vial tightly with the cap and swirl several times until the tablet is dissolved 9 Place the ...

Page 201: ...the case of high levels of residual chlorine perform the analysis with a dechlorinated water sample To dechlorinate add one DECHLOR tablet to the water sample point 1 Crush and mix to dissolve the tablet Then add the COPPER ZINC LR tablet point 2 and continue with the test procedure as described above ...

Page 202: ...il without touching them with the fingers Liquid reagents Add drops of the same size to the water sample by holding the bottle vertically and squeezing slowly After use replace the bottle caps securely noting the colour coding Note recommendation for storage e g cool and dry Powder Packs Vacu vials from CHEMetrics Vacu vials should be stored in the dark and at room temperature For further informat...

Page 203: ...ughly with deionised water 1 2 3 Guidelines for photometric measurements 1 Vials caps and stirring rods should be cleaned thoroughly after each analysis to prevent interferences Even minor reagent residues can cause errors in the test result 2 The outside of the vial must be clean and dry before starting the analysis Clean the outside of the vials with a towel Fingerprints or other marks will be r...

Page 204: ... housing it can destroy electronic components and cause corrosion 8 Contamination of the lens in the sample chamber can result in errors Check at regular intervals and if necessary clean the light entry surfaces of the sample chamber using a moist cloth or cotton buds 9 Large temperature differences between the instrument and the environment can lead to errors e g due to the formation of condensat...

Page 205: ...thods Caution 1 Dilution decreases accuracy 2 Do not dilute water samples for measurement of pH values This will lead to incorrect test results If Overrange is displayed use another instrument e g pH meter 1 2 5 Correcting for volume additions If a larger volume of acid or base is used to pre adjust the pH value a volume correction of the displayed result is necessary Example For adjusting the pH ...

Page 206: ...204 MaxiDirect_2c 03 2010 ...

Page 207: ...205 MaxiDirect_2c 03 2010 Part 2 Instrument Manual ...

Page 208: ...s If the change time exceeds 2 minutes all stored data and settings are lost Recommendation for replacement a screwdriver and new batteries must be available 2 1 3 Replacement of batteries See chapter 2 1 2 Saving data important notes before replacing batteries 1 Switch the instrument off 2 If necessary remove vial from the sample chamber 3 Place the instrument upside down on a clean and even surf...

Page 209: ...ompartment cover B must be fixed with the four screws 2 1 4 Instrument explosion drawing A screws B battery compartment cover C notch D batteries 4 batteries AA LR6 E seal ring F instrument back D batteries E seal ring C notch F instrument back B battery compartment cover A screws A A L R 6 A A L R 6 A A L R 6 A A L R 6 ...

Page 210: ...208 MaxiDirect_2c 03 2010 ...

Page 211: ...s or previous menu Function key description in the text if key available Function key description in the text if key available Function key description in the text if key available Confirming Menu of photometer settings and further functions Moving the cursor up or down Storing of displayed test result Performing Zero Performing Test Displaying date and time user countdown Decimal point ON OFF Mod...

Page 212: ...hows time and date Press clock key The display shows Either press key to accept the last used user count down or press any number key to start entering a new value The entry comprises two digits each Enter minutes and seconds e g 2 minutes 0 seconds Shift 0 2 0 0 Confirm with key The display shows Start countdown with key After countdown has finished the photometer reverts to the previous display ...

Page 213: ...ing a method The display shows a selection There are two possibilities to select the required method a enter method number directly e g Shift 8 0 to select Bromine b press arrow key or to select the required method from the displayed list Confirm with key 2 3 2 1 Method Information F1 Use F1 key to switch between the compact and the detailed list for method selection Example Line 1 Method number M...

Page 214: ...in some methods e g Chlorine The photometer then requires the type of determination Press arrow key or to select the required determi nation Confirm with key 2 3 4 Performing Zero The display shows Prepare a clean vial as described in Method and place the vial in the sample chamber making sure that the marks are aligned Press ZERO key The display shows prepare Zero press ZERO Zero accepted prepare...

Page 215: ...own with key and proceed as described in the mode description The vial must not be placed in the sample chamber Press TEST key Prepare the water sample as described in the method description and place the vial in the sample chamber The display shows the countdown by pressing the TEST key and the countdown is started automatically After the reaction period is finished the measurement starts automat...

Page 216: ...played if this method is used the next time If there is the possibility to change the chemical species for a method it is described in the manual The arrows indicate the possible chemical species and are printed below the notes of the method PO4 P P2 O5 2 3 8 Storing results Press STORE key while the test result is displayed The display shows We advise you to enter a numeric code up to 6 places A ...

Page 217: ... Press F3 key The entire data set is printed with date time Code No method and test result Printing example 100 Chlorine T 0 02 6 mg l Cl2 Profi Mode no 2009 07 01 14 53 09 Test No 1 Code Nr 007 4 80 mg l Cl2 The test No is an internal number that is set automatically if a test result is stored It appears only on the print out 2 3 10 Perform additional measurements To perform additional tests usin...

Page 218: ...bs 580 nm 940 mAbs 610 nm 950 mAbs 660 nm Select the desired wavelength from the method list or by entering the corresponding method number directly The display shows e g Always carry out zeroing using a filled e g deionised water vial The display shows Carry out measurement of the sample The display shows e g TIP To ensure complete reaction times the user countdown may be helpful chapter 2 2 3 pa...

Page 219: ...r method list switching off all methods 243 Print 20 Printing all stored results 222 Print code no 22 Print only results of a selected Code No range 224 Print date 21 Print only results of a selected time period 223 Print method 23 Print only results of one selected method 225 Printing parameters 29 Setting of printing options 226 Profi Mode 50 Switching the detailed operator instructions on off 2...

Page 220: ...he data necessary to run a user concentration method 244 User polynoms 65 Entering the data necessary to run a user polynomial 246 User methods clear 66 Delete all data of a user polynomial or of a concentration method 249 User methods print 67 Print out all data stored with mode 64 concentration or mode 65 polynomial 250 User methods init 69 Initialise the user method system polynomial and concen...

Page 221: ...tdown even if the key beep is switched off Setting date and time Press MODE Shift 1 2 keys Confirm with key The display shows The entry comprises two digits each Enter year month and day e g 14 May 2009 Shift 0 9 0 5 1 4 Enter hours and minutes e g 3 07 p m Shift 1 5 0 7 Confirm with key Note While confirming date and time with key the seconds are adjusted to zero automatically Key Beep ON 1 OFF 0...

Page 222: ...ws Press Shift 0 keys to switch the countdown off Press Shift 1 keys to switch the countdown on Confirm with key Notes 1 It is possible to interrupt the working countdown by pressing the key application e g serial analysis The user countdown is also available if the countdown is switched off 2 If the countdown function is switched off the operator is responsible for ensuring the necessary reaction...

Page 223: ... MODE Shift 1 4 keys Confirm with key The display shows Press Shift 0 keys to switch the signal beep off Press Shift 1 keys to switch the signal beep on Confirm with key Note In the case of methods with reaction periods an acoustic signal still sounds during the last 10 seconds of the countdown even if the key beep is switched off Signal Beep ON 1 OFF 0 0 Mode 4 1 1 ...

Page 224: ... The display shows Press key for printing out all stored test results The display shows e g After printing the photometer goes back to Mode Menu automatically Note It is possible to cancel the entry by ESC All stored data are printed out See chapter 2 5 1 Data Printing Print Print all Data Start cancel ESC Test No Mode 0 2 ...

Page 225: ...last day of the required period e g 19 May 2009 Shift 0 9 0 5 1 9 Confirm with key The display shows Press key and all stored results in the selected date range are printed After printing the photometer goes back to mode menu automatically Note It is possible to cancel the entry by ESC If you want to print only results of one day enter the same date twice to determine the period Print sorted date ...

Page 226: ...ode No e g Shift 1 0 Confirm with key The display shows Press key and all stored results in the selected code number range are printed After printing the photometer goes back to mode menu automatically Note It is possible to cancel the entry by ESC If you want to print only results of one code number enter the same code number twice If you want to print all results without code no code no is 0 ent...

Page 227: ...irm with key In case of differentiated methods select the required kind of determination and confirm with key The display shows Press key and all stored results of the selected method are printed After printing the photometer goes back to mode menu automatically Note It is possible to cancel the entry by ESC Print 20 Acid demand 30 Alkalinity tot 40 Aluminium T Print method 30 Alkalinity tot Start...

Page 228: ...ow key or to select the required Protocol Xon Xoff no control Confirm with key Finish with ESC key Flow Control will be set to the selection displayed at is Press Shift 2 keys to select Baud rate The display shows printing parameter 1 Flow control 2 Baud rate cancel ESC Flow Control is Xon Xoff select save cancel ESC Baud rate is 19200 select save cancel ESC 2 Mode 9 2 1 Esc ...

Page 229: ...ith key The display shows The stored data sets are displayed in chronological order starting with the latest stored test result Press key and all stored results are displayed Press F3 key to print the displayed result Press F2 key to print all results End with ESC Press arrow key to display the following test result Press arrow key to display the previous test result If there are no test results i...

Page 230: ... g 19 May 2009 Shift 0 9 0 5 1 9 Confirm with key The display shows Press key and all stored results in the selected date range are displayed Press F3 key to print the displayed result Press F2 key to print all selected results End with ESC Note It is possible to cancel the entry by ESC If you want to recall only results of one day enter the same date twice to determine the time period Storage sor...

Page 231: ...with key The display shows Press key and all stored results in the selected Code No range are displayed Press F3 key to print the displayed result Press F2 key to print all selected results End with ESC Note It is possible to cancel the entry by ESC If you want to recall only results of one code number enter the same code number twice If you want to recall all results without code no code no is 0 ...

Page 232: ... key In case of differentiated methods select the required kind of determination and confirm with key The display shows Press key and all stored results of the selected method are displayed Press F3 key to print the displayed result Press F2 key to print all selected results End with ESC Storage 20 Acid demand 30 Alkalinity tot 40 Aluminium T Storage method 30 Alkalinity tot Start cancel ESC print...

Page 233: ...data sets in me mory After pressing keys Shift 1 the following acknow ledgment is displayed Press key to delete ATTENTION All stored test results are deleted or cancel without deleting data by pressing ESC key Note All stored test results are deleted Delete data Delete all data YES 1 NO 0 Delete data Delete data Do not delete ESC 0 Mode 4 3 1 ...

Page 234: ...amber 5 Pipette 100 ml of water free of calcium to an appropriate beaker note 2 3 6 Add 10 CALCIO H No 1 tablets straight from the foil to the 100 ml of water crush the tablets using a clean stirring rod and dissolve the tablets completely 7 Add 10 CALCIO H No 2 tablets straight from the foil to the same water crush the tablets using a clean stirring rod and dissolve the tablets completely 8 Press...

Page 235: ...ed or tap water 3 If no water free of Calcium is available these ions can be masked by using EDTA Preparation Add 50 mg a spatula tipful EDTA to 100 ml water and dissolve 4 To achieve the most accurate method blank it is important to adhere exactly to the sample volume of 100 ml Calcium Hardness Method 191 Reset method blank to factory calibration Press MODE Shift 4 0 keys Confirm with key The dis...

Page 236: ...rom the sample chamber 5 Add exactly 2 ml SPADNS reagent solution to the water sample Caution Vial is filled up to the top 6 Close the vial tightly with the cap and swirl gently several times to mix the contents Calibration M170 Fluoride L Zero deionised water press ZERO Calibration 1 M191 Ca Hardness 2 2 M191 0 Jus Reset 3 M170 Fluoride L Press Shift 0 keys to keep the method blank Press Shift 1 ...

Page 237: ...ows Confirm with key Back to method selection with ESC key Select Fluoride method with keys Shift 1 7 0 and If an error message appears please repeat adjustment Notes 1 The same batch of SPADNS reagent solution must be used for adjustment and test The adjustment process needs to be performed for each new batch of SPADNS reagent solution see Standard methods 20th 1998 APHA AWWA WEF 4500 F D S 4 82 ...

Page 238: ...ocedure Return to factory calibration If the user calibration is deleted the factory calibration is automatically activated Remarks The method Fluoride cannot be calibrated with mode 45 since the test requires a calibration related to the batch of the liquid reagent SPADNS mode 40 chapter Fluoride Method 170 Table No Method Recommended range for user calibration 20 Acid demand 1 3 mmol l 35 Alkali...

Page 239: ...h basic test100 Chlorine free 215 Iodine Calibration with basic test 100 Chlorine free 220 Iron T 0 3 0 7 mg l Fe 222 Iron PP 0 1 2 mg l Fe 223 Iron TPTZ PP 0 3 0 7 mg l Fe 240 Manganese T 1 2 mg l Mn 242 Manganese PP 0 1 0 4 mg l Mn 243 Manganese HR PP 4 6 mg l Mn 250 Molybdate T 5 15 mg l Mo 252 Molybdate HR PP 10 30 mg l Mo 265 Nitrate TT 10 mg l N 270 Nitrite T 0 2 0 3 mg l N 272 Nitrite LR PP...

Page 240: ... TT 0 3 6 mg l P 326 Phosphate hydr TT 0 3 0 6 mg L P 316 Phosphonate 1 2 mg l PO4 340 Potassium 3 mg l K 350 Silica 0 5 1 5 mg l SiO2 351 Silica LR PP 1 mg l SiO2 352 Silica HR PP 50 mg l SiO2 212 Sodium hypochlorite 8 360 Sulfate PP 50 mg l SO4 355 Sulfate T 50 mg l SO4 365 Sulfide 0 2 0 4 mg l S 370 Sulfite 3 4 mg l SO3 384 Suspended Solids operating range 386 Turbidity operating range 390 Urea...

Page 241: ...w key once decreases the displayed result Press keys till the displayed result corresponds to the value of the standard Confirm with key to store the new calibration factor Cancel user calibration by pressing ESC key The display shows Now the method name is displayed inverse and the test result is calculated with the new calibration factor 100 Chlorine T 0 02 6 mg l Cl2 0 90 mg l free Cl2 user cal...

Page 242: ...ument press MODE Shift 4 6 keys and confirm with key The display shows Press Shift 1 keys to delete user calibration Press Shift 0 keys to keep the valid user calibration The instrument goes back to Zero query automatically user calibration 100 Chlorine T 0 02 6 mg l Cl2 clear user calibration YES 1 NO 0 100 Chlorine T 0 02 6 mg l Cl2 prepare ZERO press ZERO Mode 6 4 1 0 ...

Page 243: ...only a minimum of operator instructions The criteria specified above in d e f are no longer included Press MODE Shift 5 0 keys in succession Confirm with key The display shows Press Shift 0 keys to switch the Profi Mode off Press Shift 1 keys to switch the Profi Mode on The display shows Confirm with key Note Storage of test results is possible When results are stored the display also shows Profi ...

Page 244: ... is displayed Methods with a point behind the method number will be displayed in the method selection list Methods without a point will not be displayed in the method selection list Press key or to select the required method from the displayed list Switch with F2 key between active and inactive Select next method activate or inactivate it and continue Confirm with key Cancel without storing by pre...

Page 245: ...ment goes back to mode menu automatically User method list switch all methods off The program structure requires that the method list must have at least one active switched on method For this reason the instrument activates one method automatically Press MODE Shift 6 2 keys Confirm with key The display shows Press Shift 1 keys to display only one method in the method selection list Press Shift 0 k...

Page 246: ...ge should be within this range to achieve best results 1000 mAbs 1 Abs 1 E displayed Entering a User Concentration Press MODE Shift 6 4 keys Confirm with key Entry Procedure The display shows Enter a method number in the range from 850 to 859 e g Shift 8 5 0 Confirm with key Note if the entered number has already been used to save a concentration the display shows the query Press Shift 0 or ESC ke...

Page 247: ...e concentration of the first standard e g Shift 0 0 5 One step back with ESC Press F1 key to reset numerical input Confirm with key The display shows Prepare the first standard and press Test key The display shows the input value and the measured absorp tion value Confirm with key Enter the concentration of the second standard e g Shift 0 1 One step back with ESC Press F1 key to reset numerical in...

Page 248: ... display shows the input value and the measured absorp tion value Confirm with key Note Perform as described above to measure further stan dards The minimum of measured standards is 2 The maximum of measured standards is 14 S1 to S14 If all required standards or the maximum value of 14 stan dards are measured press Store key The display shows The instrument goes back to the mode menu automati call...

Page 249: ...onent of the coefficient A e g Shift 3 Confirm with key Successively the instrument queries the data for the other coefficients B C D E and F Note If zero 0 is entered for the value of the coefficient the input of the exponent is omitted automatically Confirm every input with key Enter measurement ranges from 2600 to 2600 mAbs Press or key to change between plus and minus sign Enter the values in ...

Page 250: ...display shows The instrument goes back to the mode menu automati cally Now the polynomial is stored in the instrument and can be recalled by entering its method number or selecting it from the displayed method list TIP Save all your polynomial data in a written form because in case of power outage e g changing the battery all polynomial data will be lost and must be entered again You might want to...

Page 251: ...Press MODE Shift 6 6 keys Confirm with key The display shows Enter the number of the User Method you want to delete in the range from 800 to 824 or 850 to 859 e g Shift 8 0 0 Confirm with key The query is displayed Press Shift 1 keys to delete the selected User Method Press Shift 0 keys to keep the valid User Method The instrument goes back to mode menu automatically User m clear choose no _______...

Page 252: ... and concentration methods can be printed out or transferred with HyperTerminal to a PC Press MODE Shift 6 7 keys Confirm with key The display shows Press key to print out the data e g wavelength unit of all stored User Methods The display shows e g After data transfer the photometer goes back to mode menu automatically M800 M803 User m print Start Mode 7 6 ...

Page 253: ...fined state ATTENTION All stored user methods polynomial concentration are deleted with initialisation Press MODE Shift 6 9 keys Confirm with key The display shows Confirm with key The query is displayed Press Shift 1 keys to start initialisation Press Shift 0 keys to to cancel without initialisation The instrument goes back to mode menu automatically User m init Start Initialising YES 1 NO 0 0 Mo...

Page 254: ... display shows Enter the temperature value T in the range between 3 and 53 C and confirm with key If F was selected enter the temperature value in the range between 37 and 128 F The display shows Enter the value for Calcium hardness CH in the range between 50 and 1000 mg l CaCO3 and confirm with key The display shows Enter the value for Total Alkalinity TA in the range between 5 and 800 mg l CaCO3...

Page 255: ...with key and enter a value in the defined range Selection of temperature unit Entering the temperature value is possible in degree Celsius or degree Fahrenheit Therefore the following preselection is once required Press MODE Shift 7 1 keys Confirm with key The display shows Press Shift 1 keys to select degree Celsius Press Shift 2 keys to select degree Fahrenheit The instrument goes back to mode m...

Page 256: ...display about ten units Confirm with key LCD contrast 2 4 10 Instrument special functions service Photometer Information Press MODE Shift 9 1 keys Confirm with key This method informs you about the current software version about the current detected mains power supply about the number of performed tests and free memory capacity Press arrow key to display the number of performed tests and free memo...

Page 257: ...the instrument to the serial interface of a computer the optional connection cable with integrated electronic system is required It is possible to update new software applications and additional languages via the internet Please find detailed information at our homepage in the download area as soon as available How to open and close the battery compartment cover see chapter 2 1 3 Please Note To pr...

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Page 259: ...257 MaxiDirect_2c 03 2010 Part 3 Enclosure ...

Page 260: ...ometer in plastic case 4 batteries Type AA LR 6 1 Instruction manual 1 Guarantee declaration 1 Certificate of compliance Adapter for 16 mm Ø vials Adapter for 13 mm Ø vials Round vials with cap height 48 mm Ø 24 mm Round vials with cap height 90 mm Ø 16 mm Cleaning brush Stirring rod plastic Reagent sets IRIM module and connection cable with integrated electronic system are not part of the standar...

Page 261: ...nd solvent resistant touch sensitive keyboard with integral beeper as acoustic indicator Power supply 4 batteries Type AA LR 6 lifetime approx 26 hours continuous use or 3500 tests Auto off 20 minutes after last function 30 seconds acoustical signal before switch off Dimensions approx 210 x 95 x 45 mm unit approx 395 x 295 x 106 mm case Weight unit approx 450 g Working condition 5 40 C at max 30 9...

Page 262: ... KI Potassium iodide KS 4 3 Acid demand to pH 4 3 this method is similar to Total Alkalinity but converted into the unit mmol l as the German DIN 38409 demand TDS Total Dissolved Solids LR Low Range MR Medium Range HR High Range C Reagents from Chemetrics L Liquid reagent P Powder reagent PP Powder Pack T Tablet TT Tube Test DEHA N N Diethylhydroxylamine DPD Diethyl p phenylendiamine DTNB Ellmans ...

Page 263: ...warning signal every 3 minutes warning signal every 12 seconds warning signal the instrument switches itself off capacity of the battery is too low change the batteries Jus Overrange E4 The user calibration is out of the accepted range Please check the standard reaction time and other possible faults Repeat the user calibration Jus Underrange E4 Overrange E1 The concentration of the standard is to...

Page 264: ...considering the tolerances of each reading they are the same For this reason the combined Chlorine is most likely zero Example 2 The reading for free Chlorine is under the detection limit The instrument is not able to calculate the combined Chlorine In this case the combined Chlorine is most likely the same as the total Chlorine Example 3 The reading for total Chlorine is exceeding the range The i...

Page 265: ...is no selection between differentiated free or total Profi Mode is switched on Switch Profi Mode off with Mode 50 The pre programmed countdown is not displayed Countdown is not activated and or the Profi Mode is activated Switch the countdown on with Mode 13 and or switch the Profi Mode off with Mode 50 It seems that a method is not available Method is not activated in the user method list Activat...

Page 266: ...oduct name MaxiDirect conforms to the following standards EMC Emission EN 61326 1997 A1 1998 A2 2001 A3 2003 Devices for class B Immunity EN 61326 1997 A1 1998 A2 2001 A3 2003 Requirements according to table A1 industrial environment further applicable standards 61000 4 3 1996 A1 2002 The product conforms to the regulations of the directive 2004 108 EG of the European Parliament and the Council of...

Page 267: ...265 MaxiDirect_2c 03 2010 ...

Page 268: ...ermany Tintometer AG Hauptstraße 2 5212 Hausen AG Tel 41 0 56 4422829 Fax 41 0 56 4424121 info tintometer ch www tintometer ch Switzerland The Tintometer Limited Lovibond House Solar Way Solstice Park Amesbury SP4 7SZ Tel 44 0 8452 264654 Fax 44 0 1980 625412 sales tintometer com www tintometer com UK Tintometer South East Asia Unit C 11 3A 3 Two Square No 2 Jalan 19 1 Petaling Jaya 46300 Selangor...

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