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2—15

User-Entered Calibration

Overview

The Pocket Colorimeter™ II will accept a user-prepared calibration curve. The curve
can extend from 0 to 2.5 absorbance. A user-prepared calibration curve may be
entered into any channel that does not contain a factory-programmed curve. These
channels are labeled “abs” on instruments having a single factory calibration or
are labeled “1” and “2” on the uncalibrated single wavelength instruments. Any
chemistry that can be run at the instrument wavelength may be user-entered in
these channels.

Using prepared standard solutions that cover the range of interest, the meter
generates a calibration curve by calculating the straight-line segments between
each standard entered. A calibration curve may be entered using the keypad.
Factory-entered calibration curves may also be recalculated or adjusted using the
same procedure.

To enter the user-entered calibration mode, press the

MENU

key and hold it down

until the display shows “USER” (about 5 seconds), followed by “CAL”. Press

ZERO/SCROLL

to scroll through the options.

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Содержание POCKET COLORIMETER II

Страница 1: ...59571 88 POCKET COLORIMETER II ANALYSIS SYSTEMS INSTRUCTION MANUAL Bromine Br Chlorine Dioxide ClO2 Chlorine Cl2 pH Hach Company 2004 2006 All rights reserved Printed in the U S A te dk 9 06 4ed...

Страница 2: ...s intended for use with the following Pocket Colorimeter II instruments The Pocket Colorimeter II instruments listed above are not interchangeable Bromine Cat No 59530 01 Chlorine Dioxide Cat No 59530...

Страница 3: ...8 Specifications 1 9 Instrument Keys and Display 1 11 Instrument Cap Cord 1 12 Bromine Total LR 1 15 Measuring Hints 1 15 Sampling and Storage 1 22 Accuracy Check 1 22 Interferences 1 24 Method Perfo...

Страница 4: ...Measuring Hints 1 39 Accuracy Check 1 44 Interferences 1 46 Spec Secondary Standards 1 49 Method Performance 1 49 Summary of Method 1 49 Replacement Parts 1 50 Chlorine Dioxide 1 53 Measuring Hints 1...

Страница 5: ...ndard Calibration Adjust 1 75 Summary of Method 1 75 Replacement Parts 1 76 Instrument Operation 2 3 Key Functions 2 3 Menu Selections 2 4 Switching Ranges 2 4 Setting the Time 2 4 Recalling Stored Me...

Страница 6: ...17 Entering a Predetermined Calibration Curve 2 20 Editing a User entered or Factory Calibration Curve 2 22 Exiting the Calibration Routine 2 24 Deleting Calibration Points 2 24 Retrieving the Factory...

Страница 7: ...ified in this manual Laboratory Safety As part of good laboratory practice please familiarize yourself with the reagents used in these procedures Read all product labels and the material safety data s...

Страница 8: ...ardous situation that may result in minor or moderate injury NOTE Information that requires special emphasis Precautionary Labels Please pay particular attention to labels and tags attached to the ins...

Страница 9: ...Absorbance range 0 2 5 Abs Dimensions 3 2 x 6 1 x 15 2 cm 1 25 x 2 4 x 6 inches Weight 0 2 kg 0 43 lb Sample cells 25 mm 10 mL 1 cm 10 mL AccuVac Ampuls Operating conditions 0 to 50 C 32 to 122 F 0 to...

Страница 10: ...productos qu micos GEFAHR Das Arbeiten mit chemischen Proben Standards und Reagenzien ist mit Gefahren verbunden Es wird dem Benutzer dieser Produkte empfohlen sich vor der Arbeit mit sicheren Verfahr...

Страница 11: ...d Display Item Description 1 POWER BACKLIGHT Key 2 ZERO SCROLL Key 3 MENU Key 4 Numeric Display 5 Range Indicator 6 Range Indicator 7 Menu Indicator 8 Calibration Adjusted Indicator 9 Battery Low Indi...

Страница 12: ...Use the instrument cap cord to secure the cap to the body of the colorimeter and prevent loss of the cap See Figure 1 on page 1 13 1 Loop the instrument cap cord through the ring on the cap 2 Remove...

Страница 13: ...1 13 Instrument Cap Cord continued Figure 1 Attaching the Instrument Cap Cord...

Страница 14: ...1 14...

Страница 15: ...igned to measure solutions contained in sample cells DO NOT dip the meter in the sample or pour the sample directly into the cell holder Note If the sample temporarily turns yellow after reagent addit...

Страница 16: ...cannot be preserved for later analysis 2 Press the POWER key to turn the meter on The arrow should indicate the low range channel LR Note See page 2 4 for information on selecting the correct range ch...

Страница 17: ...from the cell holder 5 Fill a second sample cell to the 10 mL line with sample Wipe off any liquid or fingerprints 6 Add the contents of one DPD Total Chlorine Powder Pillow to the sample cell the pre...

Страница 18: ...ll develop if bromine is present Note Wipe liquid off sample cells 8 Place the prepared sample in the cell holder and cover with the instrument cap Wait at least three but no more than six minutes aft...

Страница 19: ...be analyzed immediately and cannot be preserved for later analysis 2 Press the POWER key to turn the meter on The arrow should indicate the low range channel LR Note See page 2 4 for information on se...

Страница 20: ...r 5 Fill a DPD Total Chlorine Reagent AccuVac Ampul with sample Keep the tip of the ampule immersed until the ampule fills completely 6 Quickly invert the ampul several times to mix Wipe off any liqui...

Страница 21: ...red sample in the cell holder and cover with the instrument cap Wait at least three but no more than six minutes after filling the ampule Note Wipe liquid off sample cells 8 Press READ ENTER The displ...

Страница 22: ...mples Swirl gently to mix For AccuVac Ampuls use 0 3 0 6 and 0 9 mL of standard and a 30 mL sample in a 50 mL beaker 3 Analyze each sample as described in the procedure Each 0 1 mL of standard will ca...

Страница 23: ...Two options are available on the Pocket Colorimeter II to meet this requirement A bromine standard may be prepared and used to validate the calibration curve using the Standard Calibration Adjust feat...

Страница 24: ...tly Neutralize to pH 6 7 with 1 N Sodium Hydroxide Determine amount to be added on separate 10 mL sample then add the same amount to the sample being tested Correct for the additional volume Alkalinit...

Страница 25: ...g L Cat No 343 32 to a 25 mL sample 3 Mix and wait one minute 4 Add 3 drops Sodium Arsenite 5 g L Cat No 1047 32 and mix 5 Analyze 10 mL of the treated sample as described in the procedure 6 Subtract...

Страница 26: ...1 26 Bromine Total LR continued Method Performance Estimated Detection Limit EDL 0 05 mg L Br2 Typical Precision 95 confidence interval 2 25 0 11 mg L Br2...

Страница 27: ...ypically less than 4 mg L use the low range procedure Analyze samples immediately Do not use plastic containers to collect samples Note The Pocket Colorimeter II is designed to measure solutions conta...

Страница 28: ...sis 2 Press the POWER key to turn the meter on The arrow should indicate the high range channel HR Note See page 2 4 for information on selecting the correct range channel 3 Remove the meter cap Place...

Страница 29: ...cell holder 5 Fill another 1 cm 10 mL sample cell to the 5 mL line with sample 6 Add the contents of two DPD Total Chlorine Powder Pillows to the sample cell the prepared sample Note The SwifTest Disp...

Страница 30: ...lop if bromine is present Note Wipe liquid off sample cells 8 Place the prepared sample in the cell holder and cover with the instrument cap Wait at least three but no more than six minutes after addi...

Страница 31: ...s Method 1 Snap the neck off a high range Chlorine Standard Solution Voluette Ampule 25 30 mg L Cl2 2 Use a TenSette pipet to add 0 1 0 2 and 0 3 mL of standard to three separate 5 mL samples Swirl ge...

Страница 32: ...Pocket Colorimeter II to meet this requirement A bromine standard may be prepared and used to validate the calibration curve using the Standard Calibration Adjust feature see page 2 13 for more inform...

Страница 33: ...tly Neutralize to pH 6 7 with 1 N Sodium Hydroxide Determine amount to be added on separate 10 mL sample then add the same amount to the sample being tested Correct for the additional volume Alkalinit...

Страница 34: ...g L Cat No 343 32 to a 25 mL sample 3 Mix and wait one minute 4 Add 3 drops Sodium Arsenite 5 g L Cat No 1047 32 and mix 5 Analyze 10 mL of the treated sample as described in the procedure 6 Subtract...

Страница 35: ...henylenediamine to form a pink color which is proportional to the total bromine concentration The range of analysis is extended in the high range procedure by adding additional powder to increase the...

Страница 36: ...30 mg L 20 pkg 26300 20 Potassium Iodide Solution 30 g L 100 mL MDB 343 32 Sodium Arsenite Solution 5 g L 100 mL MDB 1047 32 Sodium Hydroxide Standard Solution 1 N 100 mL MDB 1045 32 Sulfuric Acid Sta...

Страница 37: ...nsion 1 Basic Portable pH Meter with electrode each 51700 10 Pipet TenSette 0 1 to 1 0 mL each 19700 01 Pipet Tips For 19700 01 TenSette 50 pkg 21856 96 Sample Cells 10 mL with screw caps 6 pkg 24276...

Страница 38: ...1 38...

Страница 39: ...ting drinking water analyses free and total chlorine and wastewater analyses total chlorine Measuring Hints If the chlorine concentration is typically less than 2 mg L use the Chlorine Pocket Colorime...

Страница 40: ...ions are subject to variable levels of interferences from monochloramine See Interferences on page 1 46 Note The Pocket Colorimeter II is designed to measure solutions contained in sample cells DO NOT...

Страница 41: ...ed for later analysis 2 Press the POWER key to turn the meter on The arrow should indicate the chlorine channel mg L Cl2 Note See page 2 4 for information on selecting the correct range channel 3 Remo...

Страница 42: ...mL line with sample Cap Note Do not use the same sample cells for free and total chlorine without thoroughly rinsing the cells between the free and total tests 6 Add the contents of one DPD Free Chlo...

Страница 43: ...repared sample in the cell holder and cover with the instrument cap Wait three to six minutes after adding the DPD Total Pillows Proceed to step 9 9 Press READ ENTER The instrument will show followed...

Страница 44: ...e an incremental increase in chlorine The exact value depends on the concentration of the Voluette ampule standard Check the certificate enclosed with the Voluette ampules for calculation of the expec...

Страница 45: ...rd Calibration Adjust feature see page 2 13 for more information The concentration of the prepared standard must be determined with an alternate instrument such as a spectrophotometer colorimeter or b...

Страница 46: ...L sample then add the same amount to the sample being tested Correct for the additional volume Alkalinity Greater than 250 mg L CaCO3 May not develop full color or color may fade instantly Neutralize...

Страница 47: ...g L Cat No 343 32 to a 5 mL sample 3 Mix and wait one minute 4 Add 3 drops Sodium Arsenite 5 g L Cat No 1047 32 and mix 5 Analyze 5 mL of the treated sample as described in the procedure 6 Subtract t...

Страница 48: ...ne test varies with the temperature the relative amount of monochloramine to free chlorine and the time required to do the analysis Approximate interference levels of monochloramine in the free chlori...

Страница 49: ...and can be determined together as total chlorine Free chlorine is present as hypochlorous acid or hypochlorite ion Combined chlorine represents a combination of chlorine containing compounds includin...

Страница 50: ...chlorine is extended by adding more indicator in proportion to sample volume Thus a larger 25 mL size powder pillow of DPD Reagent is added to a 5 mL sample Replacement Parts Required Reagents Descri...

Страница 51: ...047 32 Sodium Hydroxide Standard Solution 1 N 100 mL MDB 1045 32 Sulfuric Acid Standard Solution 1 N 100 mL MDB 1270 32 Water deionized 4 L 272 56 Optional Apparatus AccuVac Snapper Kit each 24052 00...

Страница 52: ...it Cat No Pipet TenSette 0 1 to 1 0 mL each 19700 01 Pipet Tips For 19700 01 TenSette Pipet 50 pkg 21856 96 Replacement Parts Cap for 1 cm 10 mL sample cell each 52626 00 Instrument Cap light shield e...

Страница 53: ...dioxide concentration exceeds the upper limit of the test 5 00 mg L ClO2 the color will not develop properly The display will show overrange flashing 5 50 when the concentration is 5 50 or more If th...

Страница 54: ...to settle before taking readings For best accuracy when using AccuVac Ampuls draw sample into an empty AccuVac ampule Cat No 26779 25 and use that for the zero instead of a 10 mL sample cell Check th...

Страница 55: ...l with sample the blank Note Samples must be analyzed immediately 2 Press the POWER key to turn the meter on The arrow should indicate channel 1 Note See page 2 4 for information on selecting the corr...

Страница 56: ...cell with 10 mL of sample Immediately add four drops of Glycine Reagent to the sample cell and swirl to mix 6 Immediately add the contents of one DPD Free Powder Pillow Cap and swirl gently for 20 se...

Страница 57: ...ntinued 7 Within one minute of adding the DPD to the sample place the prepared sample into the cell holder 8 Cover the sample with the instrument cap 9 Press READ ENTER The display will show followed...

Страница 58: ...l with sample the blank Note Samples must be analyzed immediately 2 Press the POWER key to turn the meter on The arrow should indicate channel 2 Note See page 2 4 for information on selecting the corr...

Страница 59: ...older 5 Collect 40 mL of sample in a 50 or 100 mL beaker Add 16 drops of Glycine Reagent to the 40 mL of sample Swirl gently to mix Continue with step 6 immediately 6 Fill a DPD Free Chlorine Reagent...

Страница 60: ...to settle Accuracy is not affected by undissolved powder Note A pink color will form if chlorine dioxide is present 8 Within one minute after filling the ampule place it into the cell holder Cover th...

Страница 61: ...demand by soaking in a dilute bleach solution 1 mL commercial bleach to l liter of deionized water for at least one hour Rinse thoroughly with deionized or distilled water If sample containers are rin...

Страница 62: ...with the standard 50 75 mg L Cl2 Calculate the volume of standard needed as follows mL standard needed 100 standard concentration c Pipet the volume of standard needed into a 100 mL volumetric flask...

Страница 63: ...ditions Hach recommends using the factory calibration A user calibration or a user prepared chlorine dioxide standard may be required by a regulatory official or agency Two options are available on th...

Страница 64: ...Pillows Estimated Detection Limit EDL 0 04 mg L ClO2 AccuVac and Powder Pillows Interferences Samples containing more than 250 mg L alkalinity or 150 mg L acidity as CaCO3 may inhibit full color devel...

Страница 65: ...3 drops of 30 g L Potassium Iodide Solution mix and wait one minute Add 3 drops of 5 g L Sodium Arsenite Solution and mix Subtract the result of this test from the original analysis to obtain the accu...

Страница 66: ...N diethyl p phenylenediamine indicator to form a pink color The color intensity is proportional to the ClO2 in the sample Chlorine interference is eliminated by adding Glycine Reagent which converts...

Страница 67: ...AccuVac Ampuls 25 pkg 1 Glycine Reagent 29 mL Require Apparatus Using AccuVac Ampuls Beaker 50 mL glass each 500 41 Beaker 100 mL glass each 500 42 Optional Reagents AccuVac Ampuls for Blanks 25 pkg...

Страница 68: ...00 Caps for 10 mL sample cells 12 pkg 24018 12 Cylinder graduated 25 mL glass each 508 40 Cylinder graduated 100 mL glass each 508 42 sension 1 Basic Portable pH Meter with electrode each 51700 10 Pi...

Страница 69: ...strument and method If not reading within 0 1 pH unit recalibrate the instrument The amount of indicator and sample is critical for accurate results and should be measured carefully Attempting to meas...

Страница 70: ...ith sample 2 Press the POWER key to turn the meter on The arrow should indicate pH Note See page 2 4 for information on selecting the correct range channel 3 Using the calibrated dropper add 0 5 mL of...

Страница 71: ...e cell to the 10 mL mark with the original sample Cap the sample cell This is the blank 5 Place the blank into the cell holder Note Wipe liquid off sample cells or damage to the instrument may occur 6...

Страница 72: ...ued 7 Press ZERO SCROLL The display will show then 0 0 Remove the blank from the cell holder 8 Place the prepared sample in the cell holder Note Wipe liquid off sample cells 9 Cover the cell with the...

Страница 73: ...1 73 pH continued 10 Press READ ENTER The display will show followed by results in pH units...

Страница 74: ...ial included in this kit or bulk buffer solution see Optional Reagents on page 1 76 Add 0 5 mL of Phenol Red Solution to 10 mL of pH 7 00 Buffer Solution to prepare the color standard Do not use color...

Страница 75: ...4 Alum type flocculents important for clear water perform best in a pH range of 7 2 to 8 0 Keeping the pH below 8 0 is important to control algae A sudden rise in pH may signal an increase in algal g...

Страница 76: ...L 26575 12 Required Apparatus Sample Cells 10 mL with caps 6 pkg 24276 06 Optional Reagents Buffer Solution pH 7 0 500 mL 12222 49 Water deionized 500 mL 272 49 Optional Apparatus Droppers 0 5 and 1 0...

Страница 77: ...2 1 Section 2 Instrument Manual...

Страница 78: ...2 2...

Страница 79: ...the backlight This key functions the same in all instrument modes and ranges ZERO SCROLL In measurement mode sets the instrument to zero In menu mode scrolls through menu options Also scrolls numbers...

Страница 80: ...the current range 2 Press the READ ENTER key to toggle between ranges 3 Press MENU again to accept and exit back to the measurement screen Setting the Time 1 Press the MENU key then press the ZERO SCR...

Страница 81: ...ss the ZERO SCROLL key until the display shows RCL The instrument automatically stores the last 10 measurements 2 In RCL press READ ENTER to recall the stored measurements beginning with the most rece...

Страница 82: ...battery compartment cover The display will show the software version number e g P 1 6 after correct battery installation When replacing discharged batteries always replace the complete set of four alk...

Страница 83: ...2 7 Instrument Operation continued Figure 1 Battery Installation...

Страница 84: ...2 8...

Страница 85: ...ges in the order that they appear on the display Service Centers are listed in page 2 37 Error Messages 1 E 0 No Zero User mode Error occurs when trying to read a standard in the user calibration mode...

Страница 86: ...chemistry If the E 1 or E 2 error occurs while zeroing the meter the meter will require the user to re zero 4 E 3 Standard Adjust Error The value obtained on the prepared standard exceeds the adjustme...

Страница 87: ...r measure the absorbance value again If the problem persists contact a Service Center page 2 37 6 E 7 Standard Value Error User mode Standard concentration is equal to another standard concentration t...

Страница 88: ...e instrument If the problem persists contact a Service Center page 2 37 Note See Maximum Minimum Displayed Value on page 2 26 for more information 9 Overrange flashing number above stated test range N...

Страница 89: ...nown standard Use the standard described in the procedure 1 Place a blank in the meter in measurement mode Press ZERO SCROLL 2 Place the reacted standard in the meter Press READ ENTER 3 Press MENU the...

Страница 90: ...bration Adjusted icon will appear in the display window To turn off Standard Calibration Adjust SCA 1 Press MENU 2 Press ZERO SCROLL until SCA appears in the display 3 Press READ ENTER then press ZERO...

Страница 91: ...uments Any chemistry that can be run at the instrument wavelength may be user entered in these channels Using prepared standard solutions that cover the range of interest the meter generates a calibra...

Страница 92: ...rations are stored upon exit from the calibration or edit modes Note To return to factory settings following the instructions in Retrieving the Factory Calibration on page 2 25 If the instrument is sh...

Страница 93: ...reagent blank is significantly more turbid or colored than deionized water Use the deionized water or the reagent blank as the zero concentration point S0 in the following calibration procedure 1 Turn...

Страница 94: ...ter or range RES resolution cannot be changed 6 In uncalibrated meters or meters with ranges labeled Abs RES will appear Press ZERO SCROLL to review the current resolution decimal placement Press ZERO...

Страница 95: ...AD ENTER key to move from digit to digit Use the ZERO SCROLL key to change the number 12 After completing entry of the first standard value press the READ ENTER key The display will show A1 13 Insert...

Страница 96: ...dure uses the Edit mode 1 Turn on the instrument and select the range to be calibrated An arrow at the top of the display will point to the selected range To change ranges press the MENU key then use...

Страница 97: ...appear on the display 7 To enter the absorbance value for S0 press the READ ENTER key to go to entry mode Use the ZERO SCROLL key to select the numerical value then press the READ ENTER key to accept...

Страница 98: ...ay Note When editing a factory calibrated meter or range RES resolution cannot be changed Note When RES or S0 appears in the display press ZERO SCROLL to quickly scroll to the data to be edited 3 In u...

Страница 99: ...the READ ENTER key to go to entry mode Use the ZERO SCROLL key to select the numerical value then press the READ ENTER key to accept the entry and advance to the next decimal place Repeat this sequenc...

Страница 100: ...ation or the factory calibration if no user entered calibration has been completed Deleting Calibration Points 1 Select the range containing user entered calibration points See Switching Ranges on pag...

Страница 101: ...Select the range to restore factory default calibration See Switching Ranges on page 2 4 2 Press and hold the MENU key until USER then CAL appears 3 Press the ZERO SCROLL key to find dFL 4 Press the R...

Страница 102: ...ue of the standards entered in a user calibration Measurements that exceed the minimum or maximum standards entered in the user calibration will return a flashing number indicating underrange or overr...

Страница 103: ...alibration with the following standards S0 1 00 S1 2 00 S2 4 00 For Hach calibrated programs the maximum and minimum displayed values always equal the factory calibrated values and cannot be changed M...

Страница 104: ...C Immunity Per 89 336 EEC EMC EN 61326 1998 Electrical Equipment for measurement control and laboratory use EMC requirements Supporting test records by Hach Company certified compliance by Hach Compan...

Страница 105: ...EN 55022 CISPR 22 Class B emissions limits Canadian Interference causing Equipment Regulation IECS 003 Class A Supporting test records from Hach EMC Test Facility certified compliance by Hach Company...

Страница 106: ...to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment...

Страница 107: ...moving one of its batteries to verify that it is or is not the source of the interference 2 Move the Pocket Colorimeter instrument away from the device receiving the interference 3 Reposition the rece...

Страница 108: ...2 32...

Страница 109: ...2 33 At Hach Company customer service is an important part of every product we make With that in mind we have compiled the following information for your convenience GENERAL INFORMATION...

Страница 110: ...2 34...

Страница 111: ...0 227 4224 Loveland Colorado 80539 0389 U S A By FAX For order information by E mail 970 669 2932 Hach Loveland orders www hach com Information Required Hach account number if available Purchase order...

Страница 112: ...ts in analytical methods they are happy to put their talents to work for you Call 1 800 227 4224 or E mail techhelp hach com International Customers Hach maintains a worldwide network of dealers and d...

Страница 113: ...3H 0X4 800 227 4224 USA only 800 665 7635 Canada only FAX 515 232 3835 Telephone 204 632 5598 FAX 204 694 5134 E mail canada hach com Latin America Caribbean Africa Europe the Middle East Far East Ind...

Страница 114: ...efective product or refund the purchase price excluding original shipping and handling charges Any product repaired or replaced under this warranty will be warranted only for the remainder of the orig...

Страница 115: ...mage caused by misuse neglect accident or improper application or installation damage caused by any repair or attempted repair not authorized by Hach Company any product not used in accordance with th...

Страница 116: ...ranty gives you specific rights and you may also have other rights that vary from state to state This warranty constitutes the final complete and exclusive statement of warranty terms and no person is...

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