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2 

 

Z-INST 25 PRO + 

Table of Contents 

1

 

GENERAL INFORMATION ........................................................................................................ 4

 

Instrument Layout ...................................................................................................................... 5

 

2

 

BACKGROUND INFORMATION ................................................................................................ 6

 

Introduction to Colorimetric Measurement .................................................................................... 6

 

Blanks and Samples .................................................................................................................... 7

 

Taking a Reading ........................................................................................................................ 7

 

Follow on Tests (

Certain Tests Only) ............................................................................................ 9

 

Care and Maintenance ............................................................................................................... 11

 

System - Quick Start ................................................................................................................. 12

 

Chlorine Testing Ranges ............................................................................................................ 13

 

Water Balance Options .............................................................................................................. 13

 

3

 

TEST METHODS .................................................................................................................... 14

 

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HMB (POLYBIGUANIDE-BASED BIOCIDE) ................................................................... 17

 

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Test 16  

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Test 20  

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 HR ....................................................................................................... 23

 

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Содержание Pooltest 25

Страница 1: ...1 ...

Страница 2: ...urement 6 Blanks and Samples 7 Taking a Reading 7 Follow on Tests Certain Tests Only 9 Care and Maintenance 11 System Quick Start 12 Chlorine Testing Ranges 13 Water Balance Options 13 3 TEST METHODS 14 14 14 15 15 16 16 HMB POLYBIGUANIDE BASED BIOCIDE 17 17 18 18 19 19 20 20 20 21 21 Test 16 21 22 22 23 Test 20 23 HR 23 24 24 24 25 26 27 ...

Страница 3: ...equirement 31 Error Messages 32 Guarantee 32 Check Standards 32 Features and Technical Specification 33 Power Supply 35 5 TROUBLESHOOTING 36 Sample Collection 36 Diluting the Sample 36 Chlorine 37 pH 38 Alkalinity 38 Ozone 38 Cyanuric Acid 38 Calcium Hardness 39 Iron LR 39 Bromine 39 6 REORDERING INFORMATION 40 ...

Страница 4: ...ses throughout the world Our products are packaged carefully and the product should reach you in the state it left our factory if this product has reached you in a state that is less than satisfactory please contact the transportation company This booklet describes the best way to use Palintest products and provides instructions for the range of water tests that can be performed using this instrum...

Страница 5: ...wimming pool water The Palintest Pooltest 25 features digital electronics and built in filters It is lightweight portable and waterproof IP67 The instrument is direct reading has automatic blank setting automatic wavelength selection and automatic power cut off Palintest Br2 Cl2 F Cl2 F pH PHMB O3 CNA Cal Alk T OK 1 2 3 4 5 6 7 8 9 0 Pooltest25 Keypad ...

Страница 6: ... measured The difference in the amount of coloured light transmitted by a colourless sample blank and the amount of coloured light transmitted by a coloured sample is a measurement of the amount of coloured light absorbed by the sample The use of filters improves the sensitivity of this process and choice of the correct optical filter and therefore the correct wavelength of light is important It i...

Страница 7: ... OK to accept the test highlighted 2 To choose a different test program either use the or keys to scroll through the menu options or use the numeric keys to enter the Phot number of the desired test Press OK to accept the selected program 3 If the sample number option is pre selected then the instrument will now ask you to enter the sample number and then press OK If the dilution factor option is ...

Страница 8: ... 5 The instrument will determine the blank transmittance and after a few seconds the following display will appear Place SAMPLE TUBE in the test chamber then press OK 6 The instrument will determine the transmittance compare with the stored calibration data and display the result The following symbols indicate the result is out of test range Result is higher than range Result is lower than range C...

Страница 9: ...thod steps and place SAMPLE TUBE in the test chamber then press OK 2 The instrument will measure the transmittance and automatically calculate the result of the follow on parameter The result will be displayed as follows 3 Some continuation test procedures involve a standing period The photometer may switch off automatically during this time To avoid the instrument switching off set for continuous...

Страница 10: ...lecting the timer the following display will appear Key in the time required in minutes and seconds maximum 29 minutes and 59 seconds using the numerical keys then select START to start the timer Use the and keys to reposition the cursor and re enter the time if it is keyed in incorrectly The timer will count down giving an audible alarm at the end of the timed period Press OK to stop the alarm Du...

Страница 11: ...ver the instrument Remember to cap the tube before reading in the instrument 3 Always cap the test tubes after preparing the blank and test sample 4 Wipe test tubes on a clean tissue to remove drips or condensation before placing in the photometer 5 Do not leave tubes standing in the photometer test chamber Remove the tubes immediately after each test 6 Immediately wipe up any drips or spillages o...

Страница 12: ...quired from mg l or ppm Set the sample number option to On to allow the entry of a sample number during normal photometer operation Set the sample increment option to On to automatically increase the sample number Set the dilution factor to On or Off If the dilution factor option is set to On the instrument will allow the entry of a numerical factor which will be used in the calculation of the res...

Страница 13: ... range required Water Balance Options Water Balance data allows pool operators to assess the corrosive and scale potential of the pool water The Pooltest 25 features two different methods for determining Water Balance For simplified water balance testing ie not requiring measurement of TDS or temperature use the Palintest Balanced Water Index To incorporate TDS and temperature measurements use the...

Страница 14: ...e tablet is thoroughly crushed 3 Add the 10ml test solution mix and seal the tube with the cap 4 Gently invert the tube to remove any bubbles from the inner walls of the tube 5 Take photometer reading 6 Retain test solution if Total Chlorine test required see overleaf for further instructions Reagents DPD No 1 Reorder Code AP 011 Test 1 FREE CHLORINE XF Option 2 Range 0 10 0 mg l ppm Method DPD XF...

Страница 15: ...D No 3 Re Order Code AP 031 1 Test 2 TOTAL CHLORINE XT Option 2 Range 0 10 0 mg l ppm Method DPD XT Colourless Red 1 Carry out this test on the solution remaining from the Free Chlorine test 2 If any shock treatment chemicals have been added to the pool add one DPD Oxystop tablet crush and mix to dissolve Stand for one minute before proceeding This will prevent a response caused by the shock treat...

Страница 16: ...Code AP 011 Test 4 OZONE Range 0 2 00 mg l ppm Method DPD Colourless Red 1 Rinse test tube with sample leaving a few drops in the tube 2 Crush the DPD No 4 tablet in two or three drops of the water sample until the tablet is thoroughly crushed 3 Add the 10ml test solution mix and seal the tube with the cap 4 Gently invert the tube to remove any bubbles from the inner walls of the tube 5 Take photo...

Страница 17: ...librated for the management of pools using commercial products of this strength A factor will need to be applied if products of a different strength are being used AII trade marks acknowledged 1 Fill test tube with sample to the 10 ml mark 2 Add one PHMB Phot tablet crush and mix to dissolve 3 Take photometer reading immediately Reagents PHMB Phot Re Order Code AP 272 Test 6 pH VALUE Range 6 5 8 4...

Страница 18: ...Allow to stand for one minute 4 Take photometer reading Reagents Alkaphot Re Order Code AP 188 Test 8 CALCIUM HARDNESS Range 0 500 mg l ppm Method Murexide Indicator Violet Orange 1 Fill test tube with sample to the 10 ml mark 2 Add one Calcicol No 1 tablet crush and mix to dissolve 3 Add one Calcicol No 2 tablet crush and mix to dissolve 4 Stand for two minutes 5 Take photometer reading Reagents ...

Страница 19: ...isintegrate for at least two minutes A cloudy solution indicates the presence of cyanuric acid 3 Crush any remaining undissolved tablet mix and then take photometer reading It is essential that the light cap is used when carrying out this test under strong or variable lighting conditions Reagents Cyanuric Acid Re Order Code AP 087 Test 10 IRON Range 0 1 00 mg l ppm Method PPST Colourless Pink 1 Fi...

Страница 20: ...rush and mix to dissolve 3 Take photometer reading Reagents Coppercol No 1 and No 2 Re Order Code AP 186 Test 13 SALT HIGH RANGE Range 0 10 000 mg l ppm Method Silver Nitrate Turbidity Clear Cloudy This test is used for testing the salt sodium chloride content of pools treated by salt chlorinators 1 Take a clean Sample Container PT 510 Using the Measuring Syringe PT 361 add 0 5 ml of pool water Fi...

Страница 21: ...e to the 10 ml mark with deionised water 2 Add one Acidifying CD tablet crush and mix to dissolve 3 Add one Chloridol tablet and allow to disintegrate for at least two minutes A cloudy solution indicates the presence of chloride 4 Crush any remaining undissolved tablet mix and then take photometer reading Use the light cap whilst taking reading Reagents Acifiying CD and Chloridol Re Order Code AP ...

Страница 22: ... ml mark with deionised water 2 Add one level spoonful of Nitratest Powder and one Nitratest tablet Do not crush the tablet Replace screw cap and shake tube well for exactly one minute then allow contents to settle 3 Then either Invert tube gently 2 or 3 times and then allow to stand for at least two minutes to ensure complete settlement Remove screw cap and wipe around top with a clean tissue Dec...

Страница 23: ... test tube with sample to the 10 ml mark 2 Add one Phosphate No 1 tablet crush and mix to dissolve 3 Add one Phosphate No 2 tablet crush and mix to dissolve 4 Stand for 10 minutes 5 Take photometer reading Reagents Phosphate No 1 and No 2 Re Order Code AP 177 Test 21 MANGANESE Range 0 5 0 mg l ppm Method Indicator Colourless Orange 1 Fill test tube with sample to the 10 ml mark 2 Add one Manganese...

Страница 24: ... Re Order Code AP 162 Test 23 HYDROGEN PEROXIDE HIGH RANGE Range 0 100 mg l ppm Method Indicator Colourless Brown Use this test for checking hydrogen peroxide levels in pools treated with PHMB 1 Fill test tube with sample to the 10 ml mark 2 Add one Acidifying PT tablet and one Hydrogen Peroxide HR tablet crush and mix to dissolve 3 Take photometer reading Reagents Acidifying PT and Hydrogen Perox...

Страница 25: ...ensor Optional Accessory 1 Remove transparent protective cap from the end of the TDS Sensor Turn on the sensor 2 Pour 10 20 ml of pool water into the transparent cap 3 Dip the sensor into the water in the container 4 Note the reading on the sensor display The sensor can be set to display the reading in units of ppm or ppt If the reading is displayed in ppt then multiply this result by 1000 to conv...

Страница 26: ...ow on from the options menu on the results screen 4 Carry out the pH test then select Follow on from the options menu on the results screen 5 The Water Balance Index is calculated and is displayed Consult the chart on Page 28 for guidance NOTE 1 The test has been calculated for an average heated swimming pool 82 F 28 C For unheated swimming pools subtract 0 1 from the index value obtained for high...

Страница 27: ...select Follow on from the options menu on the results screen 4 Carry out the pH test then select Follow on from the options menu on the results screen 5 Manually enter the TDS reading in mg l or ppm taken using the numbers displayed on the keypad Select OK when the figure on screen is correct 6 Manually enter the temperature using the numbers displayed on the keypad and select OK 7 The Langelier I...

Страница 28: ... 0 to11 2 Ideal Balance No action required 0 1 to 0 5 Scale Forming 11 3 to11 6 Acceptable Balance Retest water regularly 0 6 to 1 5 Scale Forming 11 7 to12 6 Scale Forming Decrease pH to 7 2 7 5 Decrease Total Alkalinity to 150 mg l or lower as necessary Retest water balance 1 6 Scale Forming 12 7 Highly Scale Forming Note Always keep the pH Total Alkalinity and Calcium Hardness levels within the...

Страница 29: ...tally erasing the data Select Exit to return to system mode Select Download to transmit stored data to a PC Back Light The graphical display features a backlight to enhance the display contrast this may be switched off to conserve power Language Options The photometer can be operated in a number of different languages When a particular language is selected the test names and operating commands wil...

Страница 30: ...allows 15 minutes before shut down or Off which allows continuous use This is particularly useful when powering the instrument through the USB interface USB The USB interface allows communication between the instrument and a PC Once the computer and instrument are connected by the USB cable there is a choice of two operating modes Hard Drive and COM Port In Hard Drive mode the instrument appears a...

Страница 31: ...its may interrupt light transmission and affect readings To clean the optics undo the two screws to remove the optics base plate Gently clean the internal surfaces of the optics with a soft non abrasive cloth Deposits may be removed with a slightly dampened cotton bud Replace the optics base plate and re fasten the screws The photometer is fitted with long life light sources and contains no user s...

Страница 32: ... to date with the latest tests Updates for the photometer can be supplied on request via your local distributor No special computer software is required Full instructions will be supplied with the upgrade data Guarantee Palintest photometers are guaranteed for a period of two years from the date of purchase excluding accidental damage or damage caused by unauthorised repair or misuse The guarantee...

Страница 33: ...test procedure Units Direct reading of test results in mg l or ppm User Selectable 10 digit sample number entry dilution factor time date date format system lock temperature and rounding of results Date Format Date format selectable as day month year or month day year Zeroing Automatic zeroing on blank tube and hold blank facility for series of tests Continuation test facility without the need for...

Страница 34: ...a hard drive containing the instrument files to appear on the PC The log of test results is in text file 7500_LOG txt The other files shown on screen contain calibration and operating systems for use when upgrading the instrument and should be ignored The log file can be copied from the instrument by dragging between windows and once copied can be opened with many text editors word processors or s...

Страница 35: ... instead of either Hard Drive or COM Port Power Supply The photometer is designed to operate on alkaline batteries The photometer features a battery indicator see System Mode functions A minimum voltage of 3 0V is needed to operate the photometer In addition to the above feature a battery warning message will appear automatically on the display when the battery voltage becomes low The batteries sh...

Страница 36: ...cid above 150 mg l and a more accurate result is required a dilution may be used to increase the sensitivity of the test 1 Take a Dilution Tube PT 512 and fill to the x2 mark with pool water Make up to the Deionised Water mark with deionised water Replace the tube cap and mix 2 Carry out the test on the diluted sample in a 10 ml test tube as per the normal test instructions 3 Take the photometer r...

Страница 37: ...nes Typical products are Oxybrite Oxysure and Purolyte Plus Excess MPS reacts in the DPD test It does not affect the free chlorine result with DPD No 1 but raises the DPD No 3 reading thus yielding a false high result for combined chlorine Unwary pool operators may add further shock dose at this point and this further raises the false total chlorine result Palintest s DPD Oxystop has been develope...

Страница 38: ...r is observed at the bottom of the tube the test should be thoroughly remixed before measurement Ozone Ozone free and combined chlorine and bromine residuals all react with DPD 4 reagent to produce a pink colour proportional to the concentration present in the sample Glycine destroys ozone in the sample and the colour produced in the DPD test then corresponds to the chlorine and bromine only The o...

Страница 39: ...use in seawater pools Iron LR The test colour development will normally be complete within one minute Continued colour development indicates the presence of more strongly bound iron complexes in the water In such cases the test solution should be stood for 15 minutes until colour development is complete Bromine For most purposes it is sufficient to simply measure the total bromine residual using D...

Страница 40: ...T 056 Phenol Red PM 130 AP 130 Cyanuric Acid PM 087 AP 087 Alkaphot PM 188 AP 188 Calcicol PM 252 AP 252 Coppercol PM 186 AP 186 Iron LR PM 155 AP 155 EDTA Tablets AT 090 DPD Oxystop AP 017 PHMB PM 272 AP 272 Salt Chloride PM 268 AP 268 Sulphate PM 154 AP 154 Total Hardness Hardicol PM 254 AP 254 Aluminium PM 166 AP 166 Nitrate Nitratest PM 163 AP 163 Ammonium PM 152 AP 152 Phosphate PM 177 AP 177...

Страница 41: ...Accessories Description Product Code Test Tube Brush PT 663 Replacement Photometer Tubes x5 PT 595 5 Photometer Tube Rack PT 545 Crushing Rods x10 PT 502 Pooltest 25 Premier Check Standards PT 791 V3 12 11 ...

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