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Oakton C401 301 201 101 102 103 104 105 Manual

1. 5 Remove the vial from the meter and add into it the content of one Chlorine Dioxide Glycine Reagent Sachet 6 Replace the cap ensuring it is screwed on finger tight to the vial Swirl the vial repeatedly for approximately 20 seconds until the powder has dissolved Note Do not shake or invert the vial as this may result in the loss of Chlorine Dioxide 23 10 11 Measurement Chlorine Dioxide C103 Colorimeter lt U Add content of one Swirl vial approximately Chlorine Dioxide Glycine 20 seconds until powder Reagent Sachet dissolves Unscrew the cap from the vial and add into it the content of a Chlorine Free DPD Reagent Sachet Replace the cap ensuring it is screwed on finger tight to the vial Swirl the vial repeatedly for approximately 20 seconds until the powder has dissolved Note A small amount of the powder may remain un dissolved in the vial but this will not affect the measurement Do not shake or invert the vial as this may result in the loss of Chlorine Dioxide N it Fy Add content of one Swirl vial approximately Chlorine Free DPD 20 seconds until powder Reagent Sachet dissolves Gently push the vial back fully into the sample well of the meter whilst again aligning the Y mark on the vial with the A mark on the meter Press the READ ENTER key within one minute from the time the Chlorine Free DPD Reagent Sachet was added to the vial The meter will flash CLO2
2. A precise amount of phenol red indicator is added to a sample of water The phenol red changes color from yellow at pH5 9 through to dark red at pH8 2 The amount of red color is related to its pH The amount of 525nm light absorbed by the red color is accurately measured by the meter and then converted into the pH of the sample 22 Measurement Chlorine Dioxide C103 Colorimeter 2 7 Chorine Dioxide 0 11 4 ppm CIO DPD method for Chlorine Dioxide applicable to water treated water and wastewater Note Adapted from Standard methods for the Examination of Water and Wastewater 1 Switch the meter on by pressing the ON OFF key The display will show CLO2 momentarily before displaying STbY indicating it is in stand by mode waiting for either blanking or measurement 2 Select a clean and dry vial un screw the cap and fill with sample water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial 3 Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently push the vial fully into the sample well of the instrument whilst aligning the Y mark on the vial with the A mark on the meter 4 Press the ZERO key to initiate blanking of the meter The display will show ZERo while blanking is taking place Note The meter will store and use the last blanking or zero value even if it is turned off or if the batteries are removed
3. and Ozone C105 Colorimeters follow the calibration procedure for Total Chlorine NOTE Only Chlorine standards must be used for these calibrations Do not attempt to calibrate C103 C104 and C105 Colorimeters with Chlorine Dioxide Bromine or Ozone standard solutions Chlorine Dioxide Glycine reagent must not be used during calibration of C103 Colorimeter 1 Prepare a Chlorine standard in the 4 1 5 0 ppm Cl range Measure and record the concentration value using either a non colorimetric method or another instrument of similar or higher accuracy 2 Ensure the meter is switched off Press and hold the ZERO key while switching the meter on by pressing the ON OFF key The meter will momentarily flash the model number and then display the CAL annunciator at the top left corner of the screen indicating the instrument is in calibration mode 3 Chlorine Free 8 Total Colorimeter being multi parameter will display either CL F for calibrating Chlorine Free or CL T for calibrating Chlorine Total Press the MODE key to select the desired calibration mode For Chlorine Dioxide Colorimeter the display will show CL F whereas for Bromine or Ozone Colorimeter the display shows CL T CAL r Press Mode to select test parameter of gt rv CL F for Free lt gt Chlorine or CL T for Total Chlorine Chlorine Free amp Total calibration mode selection 4 Press the READ ENTER key to confirm t
4. 2 6 4 Accuracy Check User Calibration 2 6 5 Chemistry ekke kk ARE ee 2 7 CHORINE DIOXIDE 0 11 4 PPM CLO Chlorine Dioxide Measuring Hints amp Tips 2 7 1 Sample Collection 2 7 2 Sample Measurement 2 7 3 Interferences uie ese kke ee 2 7 4 Accuracy Check User Calibration 2 8 BROMINE 0 13 5PPM BRg Bromine Measuring Hint N EE EE N N EG 2 83 Sample Colection RE N EE N OE OE teta 282 Sample Measurement s 2 8 3 Interferences s on 2 8 4 Accuracy Check User Calibracion 2 9 OZONE 0 4 1 PPM Oui A a rein ce see Ozone Measuring Hints amp Tips E 2 9 1 Sample Collection ss 292 Sample MOST Elisa aa ED A DAS Gee Pe KS EE ES TUS 29 3 O A O ee ae 2 9 4 Accuracy Check User Calibration ccccccccccsctcesssstestesssesesseetessssnsessssssorecesansassassassaciceasesaesaveausasasn CALIBRATION ani GE GES Gee OE Re ee ee Ge GO Ge Ke be ed ee ee De GE As ek ee EEN ee Es 39 3 1 CALIBRATION PROCEDURE 000 AS AA AA 39 3 2 CHLORINE FREE amp TOTAL CHLORINE DIOXIDE BROMINE AND OZONE ees ee ees ee ee ee ee ee ee ee ee ee ee ee 40 3 3 CYANURIG AG ID Se ee E thane DY T eases Del ie Ee Ge DAE ee ee ad 43 ROUTINE MAINTENANCE ese ese ese ese ese see see Rae Re Re Ee ERA Ke Ke rene 52 5 1 VIALS HANDLING CLEANING AND CARE sees see sesse ee ee ee see ee ee ee ee ede ee de ee RA ee de ee ee ee ee ee 52 ACCESSORIE O RE EE EE HA EE RE OE OE EE
5. 4 5 13 5 ppm 0 03 3 digit 4 4 la ppm 3 dig s 0 9 ppm 0 3 ppm 3 digits 4 5 13 5 ppm OZONE Automatic Range Selection 0 1 39 ppm 1 4 4 1 ppm Resolution Accuracy 0 01 ppm 0 1 39 ppm 0 1 ppm 1 4 4 1 ppm 0 02 ppm 0 1 39 ppm 0 2 ppm 1 4 4 1 ppm Specifications C401 301 201 101 102 103 104 105 Colorimeter Measurement Method Photometric Light Source Light Emitting Diode LED Wavelength 525 nm Detector Silicon photodiode Absorbance Range 0 2 5 Abs Photometric Precision 0 0015 Abs Calibration Points User selectable 1 point per colorimetric test Display 4 digit 14 segments customized liquid crystal display with annunciators Sample Cells Borosilicate glass with screw caps fill line and indexing mark Height x diameter 51 x 25 mm 2 x 1 in Sample Required 10 ml 0 33 oz Operating Temperature Range 0 50 C 32 F to 122 F Sample Temperature Range 0 50 C 32 F to 122 F Operating Humidity Range 0 90 RH non condensing at 30 C 86 F Power Supply 4 AAA alkaline batteries Battery Life gt 3000 tests Electromagnetic Compliance EMC Emitted Interference EN 61326 Immunity to Interference EN 61326 Enclosure Rating IP67 Insulation Rating Pollution degree 2 Instrument 200 g 7 oz We
6. OZ momentarily before displaying STbY indicating it is in stand by mode waiting for either blanking or measurement 2 Select a clean and dry vial un screw the cap and fill with sample water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial 3 Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently push the vial fully into the sample well of the instrument whilst aligning the Y mark on the vial with the A mark on the meter 4 Press the ZERO key to initiate blanking of the meter The display will show ZERo while blanking is taking place Note The meter will store and use the last blanking or zero value even if it is turned off or if the batteries are removed 5 Remove the vial from the meter and add into it the content of one Chlorine Total DPD Reagent Sachet 6 Replace the cap ensuring it is screwed on finger tight to the vial Invert the vial repeatedly for approximately 20 seconds until the powder has dissolved Note A small amount of the powder may remain un dissolved in the vial but this will not affect the measurement 34 Measurement Ozone C105 Colorimeter a Wo II i a gt Add content of one Invert vial approximately Chlorine Total DPD 20 seconds until powder Reagent Sachet dissolves Gently push the vial back fully into the sample well of the meter whilst again aligning the Y mark on the vial wi
7. Reagent Sachet whereas for Total Chlorine Bromine or Ozone calibration select a Chlorine Total DPD Reagent Sachet Open the sachet and tip the contents into the Z a vial containing the calibration standard 12 Replace the cap ensuring it is screwed on finger tight to E L the vial Invert the vial repeatedly for approximately 20 seconds until the powder has dissolved ena NOTE a small amount of the powder may remain un dissolved in the vial but this will not affect the measurement 13 Insert the vial fully into the sample well of the meter whilst again aligning the Y mark on the vial with the A mark on the meter 14 For Free Chlorine or Chlorine Dioxide calibration press the READ ENTER key within two minutes from the time the sachet was added to the vial As for Total Chlorine Bromine or Ozone calibration wait for two minutes before pressing the READ ENTER key and this has to be done within five minutes from the time the sachet was added to the vial 15 The meter will display Rd whilst the calibration standard is being measured and then displays SAVE to prompt for calibration acceptance and saving of calibration data READ ENTER Free Chlorine Sample 4 5 pp 41 Calibration Chlorine Free amp Total Chlorine Dioxide Bromine Ozone C401 301 201 103 104 105 Colorimeter 16 Press the READ ENTER key The meter now accept the calibration value and momentarily display HoLD and CAL annunciator befor
8. for Free Chlorine determination or one Chlorine Total seconds until powder dissolves DPD Reagent Sachet for Total Chlorine determination 9 10 11 12 Gently push the vial back fully into the sample well of the meter whilst again aligning the Y mark on the vial with the A mark on the meter For Free Chlorine determination press the READ ENTER key within two minutes from the time the DPD Free reagent was added to the vial For Total Chlorine determination wait for two minutes and then press the READ ENTER key within four minutes from the time the DPD Total reagent was added to the vial The meter will flash either CL F or CL T depending on which test is being performed whilst the measurement is taken It will then display the Chlorine concentration in parts per million ppm Clo Free Chlorine determination Measurement Chlorine Free Total C401 301 201Colorimeter Chlorine Free amp Total Measuring Hints amp Tips 2 4 1 Sample Collection Chlorine determination must take place as soon as possible after the sample is taken or else low results may be obtained Plastic containers should not be used to collect the sample because these may have a high chlorine demand which will lead to low reading results It is advisable to wash the container with sample water before the sample is collected Avoid agitating the sample excessively as this may also lead to low results 2 4 2 Sample Measure
9. press the MODE key to select the desired calibration mode for multi parameter colorimeter 19 To exit the calibration mode press the ZERO key to return to the measurement mode Press Mode to select another CAL calibration test LI n Cl Ed Press ZERO to return to measurement mode READ ENTER 44 Calibration Cyanuric Acid C401 102 Colorimeter NOTE If you wish to abort this calibration process do NOT press the READ ENTER key as in step 17 Press the ZERO key instead The meter will display AbRT and CAL annunciator to signify that the calibration has been aborted without saving the calibration value The meter will then return to the beginning of the user calibration as in step 3 NOTE If an error occurs during calibration the display will present an error message Please refer to Section 4 Troubleshooting Guide for details 45 Calibration pH C401 301 101 Colorimeter 3 4 pH 1 Ensure at least 10 ml of clear pH7 0 buffer is available 2 Ensure the meter is switched off Press and hold the ZERO key while switching the meter on by pressing the ON OFF key The meter will momentarily flash the model number and then display the CAL annunciator at the top left corner of the screen indicating the instrument is in calibration mode 3 For the single parameter colorimeter C101 the display will show PH For the multi parameter colorimeters C401 amp C301 the display will indicate the l
10. Example 50ml sample is neutralised using 50 drops of 1N Sulphuric Acid and each drop is 0 04 ml Initial Sample Volume 50ml Volume of Neutralising Reagent added 50drops X 0 04 ml 2ml Final Volume 50ml 2ml 52ml Correction Factor 52 50 1 04 A test result of 1 00ppm would then become 1 00ppm X 1 04 1 04ppm 2 9 4 Accuracy Check User Calibration Producing chlorine standards is a difficult procedure that should only be attempted by trained laboratory staff Details of preparation techniques are not provided in this document The prepared chlorine standard may be used to check the accuracy of the meter or to re calibrate the meter In almost all cases it is recommended to use the default factory calibration To check the accuracy of the meter Prepare a standard solution of known concentration within the range of the instrument It is advisable to prepare a standard near to the concentration value usually tested by the meter Use this standard in place of the sample water in the above test method Repeat the measurement 5 7 times with different sachets and average the results The result obtained should be approximately the value of the standard used please refer to instrument s specifications for data on meter precision and accuracy To re calibrate the meter All instruments are factory calibrated and user calibration is not recommended However if a Chlorine standard can be prepared measured accurately and qu
11. by pressing the ON OFF key For single parameter colorimeter the display will momentarily show PH before switching directly to STbY as that of step 3 For multi parameter colorimeter the display will indicate the last test performed Press the MODE key repeatedly until PH is displayed Press the READ ENTER key to confirm the test parameter The meter will read STbY indicating it is in stand by mode waiting for either blanking or measurement PH STbY pH test selection Multi Parameter Colorimeter Select a clean and dry vial un screw the cap and fill with sample water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently place the vial fully into the sample well of the instrument whilst aligning the Y mark on the vial with the A mark on the meter Press the ZERO key to blank the meter to that vial the meter will read ZERo whilst this is taking place Note The meter will store the last zero value it took between tests even if it turns off or if the batteries are removed Blanking 2 Remove the vial from the meter and un screw the cap Select a bottle of pH Indicator Phenol Red Unscrew the cap and holding the bottle vertically gently squeeze 20 drops of the Phenol Red into the contents of the vial Replace the cap onto the Phenol Red bottle Take extra care not to ov
12. each type of reagents Place the vial with the developed color into the sample well and align the Y mark on the vial with the A mark on the instrument and press it down until it snaps fully into the optical holder Press the READ ENTER key The meter will display the reading in appropriate units within 3 seconds To repeat the measurement of the same sample repeat steps 7 11 Ideally step 7 should not be skipped but the user may do so if testing the same sample Measurement Chlorine Free Total C401 301 201 Colorimeter 2 4 Chlorine Free amp Total 0 6ppm Cl DPD method for Free Chlorine applicable to water treated water estuary water and seawater DPD method for Total Chlorine applicable to water treated water wastewater estuary water and seawater The DPD Method is USEPA accepted for reporting drinking water analyses Free and Total Chlorine and wastewater analyses Total Chlorine only Note Adapted from Standard methods for the Examination of Water and Wastewater Note Procedure is equivalent to USEPA method 330 5 for wastewater and Standard Method 4500 CI G for drinking water 1 Switch the meter on by pressing the ON OFF key 2 Press the MODE key repeatedly until CL F is displayed for Free Chlorine determination or CL T is displayed for Total Chlorine determination 3 Press the READ ENTER key to confirm the desired test parameter The meter will read ST
13. interfere with the test method at all levels It is recommended that an alternative test method is used if more than any two of these species are present Oxidised Manganese or Oxidised Chromium All levels will cause interference To remove this interference 1 Testa 10ml sample as described in the above procedure 2 Adjust the pH of a separate 10ml sample to pH6 7 using 1N Sodium Hydroxide or 1N Sulphuric Acid 3 Add 1 drop of 20 Potassium lodide Solution swirl to mix and then wait 60 seconds 4 Add 3 drop of 5g l Sodium Arsenite Solution and swirl to mix 5 Use this as the sample in the above test procedure and make a note of the result Use a multiplication factor to correct for the dilution of the sample 6 Subtract the result obtained in step 5 from the result obtained in step 1 to give the true result 7 Correcting for dilution To correct for any reagent added to the sample to neutralise it a dilution correction factor must be used Final Volume Initial Sample Volume Correction Factor The final volume can be calculated by adding together the initial sample volume and the volume of neutralising reagent used Final Volume Initial Sample Volume Volume of Neutralising Reagent 37 Measurement Ozone C105 Colorimeter The result from a test can then be multiplied by the Correction Factor to give the true result If reagents are added from the supplied dropper bottles then 25 drops is equal to 1ml
14. sachet to avoid these errors Oxidants including Bromine and lodine These will interfere with the test method at all levels It is recommended that an alternative test method is used if these species are present Ozone May cause interference at levels above 1 5ppm Oxidised Manganese or Oxidised Chromium All levels will cause interference To remove this interference 1 Test a 10ml sample as described in the above procedure 2 Adjust the pH of a separate 10ml sample to pH6 7 using 1N Sodium Hydroxide or 1N Sulphuric Acid 3 Add 1 drop of 20 Potassium lodide Solution swirl to mix and then wait 60 seconds 4 Add 3 drop of 5g l Sodium Arsenite Solution and swirl to mix 5 Use this as the sample in the above test procedure and make a note of the result Use a multiplication factor to correct for the dilution of the sample 26 Measurement Chlorine Dioxide C103 Colorimeter 6 Subtract the result obtained in step 5 from the result obtained in step 1 to give the true result 7 Correcting for dilution To correct for any reagent added to the sample to neutralise it a dilution correction factor must be used Final Volume Initial Sample Volume Correction Factor The final volume can be calculated by adding together the initial sample volume and the volume of neutralising reagent used Final Volume Initial Sample Volume Volume of Neutralising Reagent The result from a test can then be multiplied by the C
15. test procedure and make a note of the result Use a multiplication factor to correct for the dilution of the sample 6 Subtract the result obtained in step 5 from the result obtained in step 1 to give the true result T Correcting for dilution To correct for any reagent added to the sample to neutralise it a dilution correction factor must be used Final Volume Initial Sample Volume Correction Factor The final volume can be calculated by adding together the initial sample volume and the volume of neutralising reagent used Final Volume Initial Sample Volume Volume of Neutralising 32 Measurement Bromine C104 Colorimeter Reagent The result from a test can then be multiplied by the Correction Factor to give the true result If reagents are added from the supplied dropper bottles then 25 drops is equal to 1ml Example 50ml sample is neutralised using 50 drops of 1N Sulphuric Acid and each drop is 0 04 ml Initial Sample Volume 50ml Volume of Neutralising Reagent added 50drops X 0 04 ml 2ml Final Volume 50ml 2ml 52ml Correction Factor 52 50 1 04 A test result of 1 00ppm would then become 1 00ppm X 1 04 1 04ppm 2 8 4 Accuracy Check User Calibration Producing chlorine standards is a difficult procedure that should only be attempted by trained laboratory staff Details of preparation techniques are not provided in this document The prepared chlorine standard may be used to check
16. the sample because these may have a high chlorine demand which will lead to low reading results It is advisable to wash the container with sample water before the sample is collected Avoid agitating the sample excessively as this may also lead to low results 2 8 2 Sample Measurement If the pink color forms and then rapidly fades this is an indication that the bromine concentration may be very high If this is the case dilute the sample with de ionized water and retest Multiply the result by the dilution factor used Example if the sample was diluted 2 1 with de ionized water i e 1 part sample water to 1 part de ionized water the result is multiplied by 2 to give the true concentration of the original sample Note Results obtained by this method will not be as accurate as stated in this manual because some chlorine will be lost in the dilution process After use the vial should be cleaned thoroughly to avoid contaminating the next sample Do not use household cleaners as these may have a chlorine demand which will lead to low results on subsequent tests After testing Bromine give extra attention to cleaning the vial as any residual reagent will affect any subsequent tests 2 8 3 Interferences Acidity Greater than 250ppm CaCO may cause interference To remove this interference neutralise a separate sample to pH6 7 using 1N Sodium Hydroxide Record the volume used and add the same volume of 1N Sodium Hydroxide to the
17. whilst the measurement is taken It will then display the Chlorine Dioxide concentration in parts per million ppm ENTER Chlorine Dioxide Sample 24 Measurement Chlorine Dioxide C103 Colorimeter Chlorine Dioxide Measuring Hints amp Tips 2 7 1 Sample Collection Chlorine Dioxide determination must take place as soon as possible after the sample is taken or else low results may be obtained Plastic containers should not be used to collect the sample because these may have a high chlorine dioxide demand which will lead to low reading results It is advisable to wash the container with sample water before the sample is collected Do not agitate the sample as this will also lead to low results 2 7 2 Sample Measurement If the pink colour forms and then rapidly fades this is an indication that the chlorine dioxide concentration may be very high If this is the case dilute the sample with de ionised water and retest Multiply the result by the dilution factor used Example if the sample was diluted 2 1 with de ionised water i e 1 part sample water to 1 part de ionised water the result is multiplied by 2 to give the true concentration of the original sample Note Results obtained by this method will not be as accurate as stated in this manual because some chlorine dioxide will be lost in the dilution process After use the vial should be cleaned thoroughly to avoid contaminating the next sample Do not use ho
18. 53 SPECIFICATIONS EE GE EE nn 54 WARRANTY ee ee ee se ee Ee RE RA T ERGE an 56 RETURN OF ITEMS z on anistia ek eek eed eke vee oe ee eed koe eke ee ok Gee ee Ve see ed De ske es Ek Ee ie 56 Introduction C401 301 201 101 102 103 104 105 Colorimeter 1 INTRODUCTION Thank you for selecting the waterproof portable C401 301 201 101 102 103 104 105 Colorimeter Depending on the model selected the C401 301 201 101 102 103 104 105 Colorimeter series allows you to measure up to seven parameters namely the Free Chlorine Total Chlorine Cyanuric Acid pH Chlorine Dioxide Bromine and Ozone of an aqueous sample in the field You have one of the following models e C101 pH measurement e C102 Cyanuric Acid measurement e C103 Chlorine Dioxide measurement C104 Bromine measurement C105 Ozone measurement C201 Free Chlorine and Total Chlorine measurement e C301 Free Chlorine Total Chlorine and pH measurement e C401 Free Chlorine Total Chlorine Cyanuric Acid and pH measurement Introduction C401 301 201 101 102 103 104 105 Colorimeter 1 1 Unpacking C401 301 201 101 102 103 104 105 Colorimeter and Accessories The table below indicates the items that you should find in your Colorimeter shipment Item Qty C401 C301 C201 C101 C102 C103 C104 C105 1 Colorimeter with 4 AAA batteries 2 Instruction Manual 3 Instrument Carrying Case 4 Empty Vial 5 pH Indicator Phenol
19. Always use a vial The instrument will only accurately measure the sample when vials sealed with the black caps are used The black cap serves as both seal and a light shield NOTE Do not attempt to clean the sample well The optics may be damaged NOTE This instrument is designed to measure solutions contained in the custom made glass vials and therefore the use of other type of sample vials or sample cells may result in inaccurate measurements NOTE Reagents MSDS can be obtained from http www eutechinst com techtips msds htm Measurement C401 301 201 101 102 103 104 105 Colorimeter 2 2 Preparation of Sample Vial 1 2 2 3 3 Obtain a clean and dry sample vial Figure 6 Take care to handle the sample vial by the top Rinse the vial with approximately 10 ml of the sample water capping the vial with the black screw cap and gently inverting it several times Discard the used sample and repeat the rinsing procedure two more times Figure 6 Fill the rinsed vial with the remaining portion approximately Sample Vial 10 ml of the grab sample up to the mark indicated in the vial Cap the vial with the supplied black screw cap Wipe the vial with a soft lint free cloth Ensure that the outside of the vial is dry clean and free from smudges You are now ready to place the vial into the meter for measurement Measurement Procedure Place C401 301 201 101 102 103 104 105 Colorimeter on a flat and level surfac
20. ER key as in step 16 Press the ZERO key instead The meter will display ADRT and CAL annunciator to signify that the calibration has been aborted without saving the calibration value The meter will then return to the beginning of the user calibration as in step 3 NOTE If an error occurs during calibration the display will present an error message Please refer to Section 4 Troubleshooting Guide for details 48 Restoring Factory Calibration C401 301 201 101 102 103 104 105 Colorimeter 3 5 Restoring Factory Calibration The C401 301 201 101 102 103 104 105 Colorimeter allows you to reset the meter back to the factory default calibration values This feature is extremely useful when there are errors in calibration or when you have new calibration standards 1 2 With the meter switched off press MODE and ON OFF keys simultaneously for about 2 seconds The meter will momentarily flash the model number and URST User Reset and then display No Use MODE key to select toggle between YES or No YES To restore meter back to factory calibration values No To retain last calibrated values After selecting YES or No press READ ENTER key The meter will now flash the model number the meter s revision number and enter the measurement selection mode Figure 9 shows the sequence for restoring factory calibration values 49 Restoring Factory Calibration C401 301 201 101 102 103 104 105 Colori
21. Instruction Manual C401 301 201 101 102 103 104 105 Portable Colorimeter o pl EER PH Indic Phenol A ha hen of A 68X357704 OAKION INSTRUMENTS Rev 1 05 05 EE a ir a a Preface This manual functions in two ways first as a step by step guide to help you operate the waterproof C401 301 201 101 102 103 104 105 Colorimeter second it serves as a handy reference guide It contains basic instructions that you must follow during the operation care and maintenance of the instrument The safety protection provided by this equipment may be impaired if it is used in a manner not described in this manual It is recommended that all operators should read this manual prior to working with this instrument Eutech Instruments Oakton Instruments cannot accept any responsibility for damage or malfunction to the meter caused by improper use of the instrument The information presented in this manual is subject to change without notice as improvements are made and does not represent a commitment on the part of Eutech Instruments Pte Ltd Oakton Instruments Note Eutech Instruments Pte Ltd Oakton Instruments reserves the right to make improvements in design construction and appearance of our products without notice Copyright 2004 All rights reserved Eutech Instruments Pte Ltd Oakton Instruments Rev 1 05 05 TABLE OF CONTENTS 1 4 5 INTRODUCTION reatata at ceatani
22. Red Kit 1 0 jo o 6 Cyanuric Acid Reagent Kit 1 o 7 Chlorine Free DPD Reagent Kit i o o o o 8 Chlorine Total DPD Reagent Kit 1 o o o o o 9 Chlorine Dioxide Glycine 4 o Reagent Kit Remove C401 301 201 101 102 103 104 105 Colorimeter from the packing carton Carefully inspect all items to ensure that no visible damage has occurred during shipment If the items you received do not match your order please contact your nearest distributor immediately WARNING Extra care should be taken when unpacking opening and handling the sample vials Surface scratches or finger smudges on the vial surface may cause measurement errors Handle these items by their caps only Batteries provided with the meter package are to be installed prior to use See Section 1 4 Battery Installation on page 5 In the next page Figure 1 depicts the meter The three main components of the instrument are the sample well the display and the keypad The following sections will describe the functionality of the display and the keypad The proper use of the instrument will be discussed in later sections Introduction C401 301 201 101 102 103 104 105 Colorimeter Sample Vial Sample Well Meter Index Liquid Crystal Marking Display Keypad Figure 1 Parts of C401 301 201 101 102 103 104 105 Colorimeter Display All the LCD segments and annunciators that can appear on the display are s
23. alified by a different method titration for example or another instrument of higher precision and accuracy then a Chlorine standard in the 4 1 5 0 ppm Cl range can be used Please refer to Section 3 2 Chlorine Free amp Total Chlorine Dioxide Bromine and Ozone for details 38 Calibration C401 301 201 101 102 103 104 105 Colorimeter 3 CALIBRATION The C401 301 201 101 102 103 104 105 Colorimeter was calibrated and tested prior to leaving the factory Therefore it is possible for you to use the instrument directly out of the box Re calibration of the instrument is NOT recommended particularly in the case of chemical tests of very unstable and or difficult to prepare calibration solutions However the meter allows you to calibrate in one point for each chemical test fitted in the instrument It is recommended to calibrate the pH at 7 0 pH units using the supplied colorless 7 0 pH buffer For each of the chemical tests fitted in the instrument the Colorimeter requires only one standard solution for a complete calibration During calibration the instrument performs several system self diagnostics As such several warning messages will be displayed If the instrument detects an irregularity with either the detector or the lamp a warning message will be displayed during or upon exiting the calibration mode If this occurs attempt to rectify the situation as indicated in Section 4 Troubleshooting Guide In any event the instru
24. ast test performed Press the MODE key until PH is displayed CAL Press Mode PH son Ee pH calibration mode selection Multi Parameter Colorimeter Press the READ ENTER key to confirm the selected test The meter will display bLNK indicating it is waiting for a blanking sample Note blanking is compulsory during calibration without blanking the meter will not continue with the calibration procedure Select a clean vial un screw the cap and fill with de ionised water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently push the vial fully into sample well of the instrument whilst aligning the Y mark on the vial with the A mark on the meter Press the ZERO key to blank the meter to that vial the meter will read ZERo whilst this is taking place Remove the blanking vial from the meter The meter displays 7 0 pH with CAL annunciator on top left corner Blanking Sample 46 10 12 13 14 15 17 18 Calibration pH C401 301 101 Colorimeter Select another clean vial un screw the cap and fill it with 10 ml of the pH7 0 colorless buffer fill up to the line on the vial Note A proper calibration requires exactly 10 ml volume of pH7 0 buffer Select a bottle of pH Indicator Phenol Red Unscrew the cap and holding the bottle ver
25. bY indicating it is in stand by mode waiting for either blanking or measurement Free Chlorine test selection 4 Select a clean and dry vial un screw the cap and fill with sample water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial 5 Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently push the vial fully into the sample well of the instrument whilst aligning the Y mark on the vial with the A mark on the meter 6 Press the ZERO key to initiate blanking of the meter The display will show ZERo while blanking is taking place Note The meter will store and use the last blanking or zero value even if it is turned off or if the batteries are removed Blanking Sample Measurement Chlorine Free Total C401 301 201 Colorimeter Remove the vial from the meter and add into it the content of one Chlorine Free DPD Reagent Sachet for Free Chlorine determination or the content of one Chlorine Total DPD Reagent Sachet for Total Chlorine determination Replace the cap ensuring it is screwed on finger tight to the vial Invert the vial repeatedly for approximately 20 seconds until the powder has dissolved Note A small amount of the powder may remain un dissolved in the vial but this will not affect the measurement i gt Add content of one Chlorine Free DPD Reagent Sachet Invert vial approximately 20
26. colorimeter C102 the display will show CYNA For the multi parameter colorimeter C401 the display will indicate the last test performed Press the MODE key until CYNA is displayed l 1 Press Mode to select test l J parameter of JE CYNA for Cyanuric Acid Cyanuric Acid calibration mode selection Multi Parameter Colorimeter 4 Press the READ ENTER key to confirm the selected test The meter will display bLNK indicating it is waiting for a blanking sample blanking the meter will not continue with the calibration Note blanking is compulsory during calibration without procedure 5 Select a clean vial un screw the cap and fill with de ionised water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial 6 Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently place the vial fully into sample well of the instrument whilst aligning the Y mark on the vial with the A mark on the meter 7 Press the ZERO key to blank the meter to that vial the meter will display ZERo whilst this is taking place 8 Remove the blanking vial from the meter 9 The meter displays 66 ppm with CAL annunciator on top left corner 10 Use the MODE key repeatedly to select the concentration of the prepared calibration standard in the 66 75 ppm range Press Mode to L CAL select calibration Blanking point from 66 Sample ppm p
27. curacy To re calibrate the meter All instruments are factory calibrated and user calibration is not recommended However if a Chlorine standard can be prepared measured accurately and qualified by a different method titration for example or another instrument of higher precision and accuracy then a Chlorine standard in the 4 1 5 0 ppm Cl range can be used Please refer to Section 3 2 Chlorine Free amp Total Chlorine Dioxide Bromine and Ozone for details 28 Measurement Bromine C104 Colorimeter 2 8 Bromine 0 13 5ppm Br DPD method for Bromine applicable to water treated water wastewater and seawater Note Adapted from Standard methods for the Examination of Water and Wastewater 1 Switch the meter on by pressing the ON OFF key The display will show bR momentarily before displaying STbY indicating it is in stand by mode waiting for either blanking or measurement L l LI 2 Select a clean and dry vial un screw the cap and fill with sample water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial Pd 3 Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently push the vial fully into the sample well of the instrument whilst aligning the W mark on the vial with the A mark on the meter 4 Press the ZERO key to initiate blanking of the meter The display will show ZERo while blanking is taking plac
28. d in step 1 to give the true result 7 Correcting for dilution To correct for any reagent added to the sample to neutralise it a dilution correction factor must be used Final Volume Initial Sample Volume Correction Factor The final volume can be calculated by adding together the initial Measurement Chlorine Free Total C401 301 201Colorimeter sample volume and the volume of neutralising reagent used Final Volume Initial Sample Volume Volume of Neutralising Reagent The result from a test can then be multiplied by the Correction Factor to give the true result If reagents are added from the supplied dropper bottles then 25 drops is equal to 1ml Example 50ml sample is neutralised using 50 drops of 1N Sulphuric Acid and each drop is 0 04 ml Initial Sample Volume 50ml Volume of Neutralising Reagent added 50drops X 0 04 ml 2ml Final Volume 50ml 2ml 52ml Correction Factor 52 50 1 04 A test result of 1 00ppm would then become 1 00ppm X 1 04 1 04ppm 2 4 4 Accuracy Check User Calibration Producing chlorine standards is a difficult procedure that should only be attempted by trained laboratory staff Details of preparation techniques are not provided in this document The prepared chlorine standard may be used to check the accuracy of the meter or to re calibrate the meter In almost all cases it is recommended to use the default factory calibration To check the accuracy of the m
29. e Note The meter will store and use the last blanking or zero value even if it is turned off or if the batteries are removed 5 Remove the vial from the meter and add into it the content of one Chlorine Total DPD Reagent Sachet 6 Replace the cap ensuring it is screwed on finger tight to the vial Invert the vial repeatedly for approximately 20 seconds until the powder has dissolved Note A small amount of the powder may remain un dissolved in the vial but this will not affect the measurement 29 Measurement Bromine C104 Colorimeter a Wo II i gt Add content of one Invert vial approximately Chlorine Total DPD 20 seconds until powder Reagent Sachet dissolves Gently push the vial back fully into the sample well of the meter whilst again aligning the Y mark on the vial with the A mark on the meter Wait for two minutes and then press the READ ENTER key within four minutes from the time the DPD Total reagent was added to the vial The meter will flash DR whilst the measurement is taken It will then display the Bromine concentration in parts per million ppm READ ENTER Bromine Sample dB 30 Measurement Bromine C104 Colorimeter Bromine Measuring Hints amp Tips 2 8 1 Sample Collection Bromine determination must take place as soon as possible after the sample is taken or else low results may be obtained Plastic containers should not be used to collect
30. e Place the sample vial inside the sample well and align the vial s mark with the meter s index mark See Figure 8 Align index mark on the sample vial with the index mark on the colorimeter and push till it is fully snapped in IMPORTANT Place meter on a flat and level surface DO NOT hold it on hands while operating i the meter It may lead to TAA inaccurate readings Figure 8 Sample vial index alignment to the meter s index mark Push the vial until it is fully snapped in 10 11 Measurement C401 301 201 101 102 103 104 105 Colorimeter Turn on the meter by pressing the ON OFF key For the single parameter colorimeter the display will momentarily show the test to be performed before switching directly to STbY as that of step 6 For the multi parameter colorimeter the display will indicate the last test performed Press the MODE key to make selection on the desired test to be performed Press the READ ENTER key to confirm your selection The meter will display STbY indicating it is ready to accept a measurement or a blanking Press the ZERO key to perform the blanking of the meter If the user chooses to skip this step the meter will use the last value of the blank for the next calculation Remove the sample vial used for blanking from the instrument and add the appropriate reagent to it Cap the vial and follow the appropriate instructions including the time required to develop the color for
31. e returning to the beginning of the calibration as in step 3 17 To continue with another calibration press the MODE key to select the desired calibration mode for multi parameter colorimeter 18 To exit calibration mode press ZERO key to return to the measurement mode READ CAL Press Mode to select ENTER l another calibration test la o L Press ZERO to return to measurement mode Chlorine Free 8 Total calibration sequence NOTE If you wish to abort the calibration process do NOT press the READ ENTER key as in step 16 Press the ZERO key instead The meter will display ADRT and CAL annunciator to signify that the calibration has been aborted without saving the calibration value The meter will then return to the beginning of the user calibration as in step 3 NOTE If an error occurs during calibration the display will present an error message Please refer to Section 4 Troubleshooting Guide for details 42 Calibration Cyanuric Acid C401 102 Colorimeter 3 3 Cyanuric Acid 1 Prepare a Cyanuric Acid standard solution in the 66 75 ppm range and record the concentration value 2 Ensure the meter is switched off Press and hold the ZERO key while switching the meter on by pressing the ON OFF key The meter will momentarily flash the model number and then display the CAL annunciator at the top left corner of the screen indicating the instrument is in calibration mode 3 For the single parameter
32. e meter Use this standard in place of the sample water in the above test method The result obtained should be approximately the value of the standard used please refer to instrument s specifications for data on meter precision and accuracy Measurement Cyanuric Acid C401 102 Colorimeter To re calibrate the meter All instruments are factory calibrated and user calibration is not recommended However if a Cyanuric Acid standard can be accurately prepared or measured by a different method or instrument of higher precision and accuracy then a Cyanuric Acid standard in the 66 75 ppm range can be used Please refer to section 3 3 Cyanuric Acid for details 2 5 5 Chemistry Cyanuric Acid is commonly used to stabilize the chlorine present in swimming pool water With correct pool maintenance Cyanuric Acid build up is uncommon however if correct maintenance is not carried out the levels may build up until potentially harmful In the test method the Cyanuric acid reacts with the sachet reagent in a conditioned sample to produce a suspended turbidity The amount of turbidity produced is proportional to the concentration of Cyanuric Acid The amount of 525nm light absorbed scattered by the turbidity is accurately measured by the meter and then converted into the Cyanuric Acid concentration 2 6 Measurement pH C401 301 101 Colorimeter pH 5 9 8 2 pH units For water and wastewater Phenol Red Method Switch the meter on
33. e the blank Sample ERRO absorbance is less than blanking or blanking too low to achieve specified resolution Ensure that blanking is done before the chemical reagent is added Repeat the blanking procedure Calibration Failure The absorbance of the calibration ERR1 standard is outside the range allowed for the selected calibration point Ensure calibration standard is accurately prepared Replace calibration standard with a known accurate value and recalibrate Ensure the vial is fully snapped in ERR2 Excessive stray light detected the sample well ERR3 Lamp Failure LED is faulty Return the unit for repair Low battery indication The batteries need to be replaced Replica ie Batenes If an error message appears take the appropriate corrective action and re do the desired procedure If the problem persists contact Eutech Instruments or your dealer See Sections on Warranty and Return of Items on page 56 51 Routine Maintenance C401 301 201 101 102 103 104 105 Colorimeter 5 ROUTINE MAINTENANCE The supplied carrying case is optimal for protecting the instrument If you do not plan on leaving the instrument in the supplied carrying case when not in use ensure that the instrument has been turned off and that a clean sample vial fitted with a black cap has been placed in the sample well This will ensure that a minimal amount of dust and or debris will be able to s
34. er tighten the cap IRIE Replace the cap onto the vial ensuring it is screwed on finger tight Invert the vial several times to mix 10 11 Measurement pH C401 301 101 Colorimeter Add 20 drops of pH Indicator Invert several Phenol Red times to mix Gently push the vial back fully into the sample well of the instrument whilst again aligning the Y mark on the vial with the A mark on the meter Wait for 1 minute and then press the READ ENTER key within 3 minutes from when the time the Phenol Red was added to the vial The meter will flash PH whilst the measurement is taken It will then display the pH of the solution in pH units READ ENTER pH Sample j 20 Measurement pH C401 301 101 Colorimeter pH Measuring Hints Tips 2 6 1 Sample Collection Samples may be collected in either plastic or glass bottles It is advisable to wash the container with sample water before the sample is collected For accurate results analysis should be conducted as soon as possible after sample collection 2 6 2 Sample Measurement The amount of sample used and the amount of reagent added is critical to obtaining correct test results Ensure that the reagent is added in a consistent manner with the dropper bottle being held vertically and squeezed slowly To increase the test accuracy measure the 10ml sample and reagent using calibrated pipettes Note 20 drops of reagent 0 8ml It is important to re cal
35. eter Prepare a standard solution of known concentration within the range of the instrument It is advisable to prepare a standard near to the concentration value usually tested with the meter Use this standard in place of the sample water in the above test method Repeat the measurement 5 7 times with different sachets and average the results The result obtained should be approximately the value of the standard used please refer to instrument s specifications for data on meter precision and accuracy To re calibrate the meter All instruments are factory calibrated and user calibration is not recommended However if a Chlorine standard can be prepared measured accurately and qualified by a different method titration for example or another instrument of higher precision and accuracy then a Chlorine standard in the 4 1 5 0 ppm Cl range can be used Please refer to Section 3 2 Chlorine Free amp Total Chlorine Dioxide Measurement Chlorine Free Total C401 301 201 Colorimeter Bromine and Ozone for details 2 4 5 Chemistry Chlorine exists in water as Un Combined Free Chlorine and Combined Chlorine The concentration of Free Chlorine can be determined directly and the concentration of Combined Chlorine may be calculated by subtracting the concentration of Free Chlorine from that of Total Chlorine In the Free Chlorine test method Un Combined Chlorine reacts directly with DPD N N diethyl p phenylenediamine in a conditio
36. ettle on the optics of the instrument 5 1 Vials Handling Cleaning and Care Proper colorimetric measurement of a sample requires the use of a vial that is free of marks smudges scratches and any bacterial growth Therefore sample vials must be handled with absolute care to avoid contamination or damage which might change the optical characteristics of the glass Scratches fingerprints and water droplets on the sample vial or inside the sample well can cause stray light interference leading to inaccurate readings Cleaning the vial is accomplished by washing the interior and exterior of the vial in a detergent solution Once cleaned the vial should be rinsed thoroughly 8 to 10 times with clean distilled water to eliminate the possibility of detergent buildup and streaking Sample vials should always be handled from the top or by the cap to avoid fingerprints or smudges After a vial has been filled with a sample and capped the outside surface should be wiped with a clean lint free absorbent cloth until it is dry Cleaned and dried vials should be stored with the black caps on The vial can be stored in the carrying case During normal operation you may use any typical glass cleaner along with a lint free cloth or tissue Kimwipes to clean the outside of the vials Accessories C401 301 201 101 102 103 104 105 Colorimeter 6 ACCESSORIES The items shown below are recommended accessories and replacement parts for t
37. he selected test The meter will display bLNK indicating it is waiting for a blanking sample NOTE Blanking is compulsory during calibration without blanking the meter will not continue with the calibration procedure 5 Select a clean vial unscrew the cap and fill with deionised water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial 6 Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently push the vial fully into sample well of the 40 Calibration Chlorine Free amp Total Chlorine Dioxide Bromine Ozone C401 301 201 103 104 105 Colorimeter instrument whilst aligning the W mark on the vial with the A mark on the meter 7 Press the ZERO key to blank the meter to that vial the meter will display ZERo whilst this is taking place 8 Remove the blanking vial from the meter The meter displays 4 1 ppm with the CAL annunciator on the top left corner 9 Use the MODE key repeatedly to select the concentration of the prepared calibration standard in the 4 1 5 0 ppm range Blanking Sample 10 Select another clean vial un screw the cap and fill it with 10 ml of the prepared Chlorine standard fill up to the line on the vial Press Mode to po select calibration point from 4 1 ppm ppm to 5 0 ppm in an incremental circular manner 11 For Free Chlorine or Chlorine Dioxide calibration select a Chlorine Free DPD
38. he instrument Item Description Eutech Oakton Instruments Instruments Order Code Order Code C 101 pH Colorimeter with sample vials a 30 ml bottle pH Indicator Phenol Red Reagent Kit and ECC101 35645 10 batteries in a rugged carrying case C 102 Cyanuric Acid Colorimeter with sample vials Cyanuric Acid Reagent Kit and batteries in a ECC102 35645 12 rugged carrying case C 103 Chlorine Dioxide Colorimeter with sample vials Chlorine Dioxide Glycine Reagent Kit S Chlorine Free Reagent Kit and batteries in a ESCs oa rugged carrying case C 104 Bromine Colorimeter with sample vials Chlorine Total Reagent Kit and batteries in a ECC104 35645 14 rugged carrying case C 105 Ozone Colorimeter with sample vials Chlorine Total Reagent Kit and batteries in a ECC105 35645 15 rugged carrying case C 201 Free Total Chlorine Colorimeter with sample vials Chlorine Free DPD Reagent Kit Chlorine Total DPD Reagent Kit and batteries in aid pan a rugged carrying case C 301 Free Total Chlorine pH Colorimeter with sample vials a 30 ml bottle Chlorine Free DPD Reagent Kit Chlorine Total DPD Reagent Kit ECC301 35645 30 pH Indicator Phenol Red Kit and batteries in a rugged carrying case C 401 Free Total Chlorine pH Cyanuric Acid Colorimeter with sample vials a 30 ml bottle Chlorine Free DPD Reagent Kit Chlorine Total d DPD Reagent Kit pH Indicato
39. hilst aligning the Y mark on the vial with the A mark on the meter Press the ZERO key to blank the meter to that vial the meter will read ZERo whilst this is taking place Note The meter will store the last zero value it took between tests even if it turns off or if the batteries are removed Blanking Sample Remove the vial from the meter and un screw the cap Select a Cyanuric Acid Reagent Sachet Open the sachet and tip the contents into the vial Replace the cap ensuring it is screwed on finger tight to the vial Shake the vial for 1 minute Note a small amount of the powder may remain un dissolved in the vial but this will not affect the reading 10 11 Measurement Cyanuric Acid C401 102 Colorimeter ME i Add content of one Shake for Cyanuric Acid Reagent Sachet 1 minute Gently push the vial back fully into the sample well of the instrument whilst again aligning the W mark on the vial with the A mark on the meter Wait for two minutes and then press the READ ENTER key within five minutes from the time the Cyanuric Acid reagent was added to the vial The meter will flash CYNA whilst the measurement is taken It will then display the Cyanuric Acid concentration in parts per million ppm READ ENTER E CYNA A 15 Measurement Cyanuric Acid C401 102 Colorimeter Cyanuric Acid Measuring Hints Tips 2 5 1 Sample Collection Samples may be collected in either plastic or g
40. hown in Figure 2 The display is used for reporting the colorimeter reading communicate error messages and provide guidance for the operation of the instrument Calibration Mode Annunciator Battery Indicator CAL Units of Measure 14 segment Liquid Crystal Display Figure 2 Customized LCD when switched on Introduction C401 301 201 101 102 103 104 105 Colorimeter 1 3 Keys and Functions The keypad has four keys ON OFF MODE ZERO and READ ENTER Keys Functions ON OFF Powers on and shuts off the meter With the auto switch off feature the meter automatically shuts off 10 minutes after last key press MODE Selects the test to be performed Selects the calibration point in an incremental circular manner during calibration ZERO Blanks the instrument sets the meter to zero before chemical reagent is added Initiates the calibration mode when used with the ON OFF key Aborts the calibration process without saving Exits the calibration mode READ Initiates the measurement of the sample after the chemical reagent ENTER has been added Confirms the test selection WATERPROOF READ ENTER Figure 3 C401 301 201 101 102 103 104 105 Keypad Introduction C401 301 201 101 102 103 104 105 Colorimeter 1 4 Battery Installation Four AAA sized batteries are included in your meter s packaging 1 Use a Philips screwdriver to remove the two screws holding the battery cover See F
41. ibrate the meter to each new batch of reagent used or if the reagent has not been used for more than a month It is also important to occasionally check the results obtained with a colorless pH7 0 buffer solution If the result is outside the range pH6 9 7 1 re calibrate the meter please refer to section 3 4 pH Due to the nature of the test method a sample pH of less than 5 9 or greater than 8 2 may result in false readings Do not use this test method to analyze samples with a pH outside of the specified range 2 6 3 Interferences Chlorine Chlorine concentrations of greater than 6ppm may interfere To remove this interference add a crystal of Sodium Thiosulphate to the sample and mix before adding the reagent 2 6 4 Accuracy Check User Calibration A colorless pH7 0 buffer supplied can be used to check the test accuracy and strength of reagent To check the accuracy of the meter Use a colorless pH7 0 buffer in place of the sample water in the above test method The result obtained should be in the range pH6 9 7 1 please refer to instrument s specifications for data on meter precision and accuracy To re calibrate the meter Please refer to section 3 4 pH for details 21 Measurement pH C401 301 101 Colorimeter 2 6 5 Chemistry The monitoring and control of the pH of water is important in many different applications This test method provides a quick and accurate method for measuring pH in the range pH5 9 8 2
42. ight Instrument in carrying case 1 25 kg 2 75 Ib Instrument 6 8 W x 15 5 L x 4 6 H cm ad 2 7 x 6 1 x 1 8 in Dimensions Carrying case 16 W x 35 L x 12 H cm 6 3 x 13 8 x 4 7 in 59 Warranty and Return of Items C401 301 201 101 102 103 104 105 Colorimeter 8 WARRANTY The Colorimeters is supplied with a 2 year warranty from manufacturing defects If repair or adjustment is necessary and has not been the result of abuse or misuse within the designated period please return freight pre paid and correction will be made without charge Eutech Instruments Oakton Instruments will determine if the product problem is due to deviations or customer misuse Out of warranty products will be repaired on a charged basis Exclusions The warranty on your instrument shall not apply to defects resulting from e Improper or inadequate maintenance by customer e Unauthorized modification or misuse e Operation outside of the environment specifications of the products Waterproof Seal Opening the instrument enclosure excluding the battery compartment may void the warranty 9 RETURN OF ITEMS Authorization must be obtained from our Customer Service Department or authorized distributor before returning items for any reason A Return Goods Authorization RGA form is available through our Authorized Distributor Please include data regarding the reason the items are to be returned For your protec
43. igure 4 Battery Installation 2 Remove the battery cover 3 Insert the batteries Follow the diagram inside the cover for correct polarity 4 Replace the battery cover onto its original position using the two screws removed earlier 5 The meter is now ready to operate Philips Screws Battery cover Four AAA sized batteries Figure 4 Battery Installation NOTE Dispose used batteries in accordance with your local regulations Measurement C401 301 201 101 102 103 104 105 Colorimeter 2 MEASUREMENT 2 1 General Information The waterproof C401 301 201 101 102 103 104 105 Colorimeter allows you to measure up to seven parameters namely the pH Cyanuric acid Free Chlorine Total Chlorine Chlorine Dioxide Bromine and Ozone of a sample and reports the results in appropriate units ppm or pH Each specific measurement has its own range as listed in the specifications The meter will go through a power sequence as shown below LID ELF Meter s Model Number Meter s Revision Number Measurement Mode Selection Figure 5 Example of C401 Colorimeter power up sequence An accurate colorimeter measurement depends on good measurement techniques Factors such as clean sample vials positioning of vial in the sample well using a vial with a light shield cap meter calibration handling of meter and others have to be taken into consideration NOTE Do not pour liquid directly into the sample well of the instrument
44. ill be lost in the dilution process After use the vial should be cleaned thoroughly to avoid contaminating the next sample Do not use household cleaners as these may have a chlorine demand which will lead to low results on subsequent tests After testing Ozone give extra attention to cleaning the vial as any residual reagent will affect any subsequent tests 2 9 3 Interferences Acidity Greater than 250ppm CaCO may cause interference To remove this interference neutralise a separate sample to pH6 7 using 1N Sodium Hydroxide Record the volume used and add the same volume of 1N Sodium Hydroxide to the sample before carrying out the above test procedure Use a multiplication factor to correct for the dilution of the sample Alkalinity Greater than 250ppm CaCO may cause interference To remove this 36 Measurement Ozone C105 Colorimeter interference neutralise a separate sample to pH6 7 using 1N Sulphuric Acid Note the volumes used and add the same volume of 1N Sulphuric Acid to the sample before carrying out the above test procedure Use a multiplication factor to correct for the dilution of the sample Hardness No effect at less than 2000ppm CaCOs Monochloramine Monochloramine will cause a gradual increase in the Free Chlorine result over time Take the test result within 1 minute of adding the reagent sachet to avoid these errors Oxidants including Chlorine Chlorine Dioxide lodine and Bromine These will
45. inity Greater than 250ppm CaCO may cause interference To remove this interference neutralise a separate sample to pH6 7 using 1N Sulphuric Acid Note the volumes used and add the same volume of 1N Sulphuric Acid to the sample before carrying out the above test procedure Use a multiplication factor to correct for the dilution of the sample Hardness No effect at less than 2000ppm CaCOs Monochloramine Monochloramine will cause a gradual increase in the Free Chlorine result over time Take the test result within 1 minute of adding the reagent sachet to avoid these errors Oxidants including Bromine Chlorine Dioxide lodine and Ozone These will interfere with the test method at all levels lt is recommended that an alternative test method is used if more than any two of these species are present Oxidised Manganese or Oxidised Chromium All levels will cause interference To remove this interference 1 Testa 10ml sample as described in the above procedure 2 Adjust the pH of a separate 10ml sample to pH6 7 using 1N Sodium Hydroxide or 1N Sulphuric Acid 3 Add 1 drop of 20 Potassium lodide Solution swirl to mix and then wait 60 seconds 4 Add 3 drop of 5g l Sodium Arsenite Solution and swirl to mix 5 Use this as the sample in the above test procedure and make a note of the result Use a multiplication factor to correct for the dilution of the sample 6 Subtract the result obtained in step 5 from the result obtaine
46. lass bottles It is advisable to wash the container with sample water before collecting the sample Do not store the sample for more than 24 hours before conducting the analysis 2 5 2 Sample Measurement Due to the nature of the test method concentrations less than 5 ppm Cyanuric Acid are not detectable Clean the vial immediately after taking and recording a reading Do not leave the sample with added reagent into the vial for more than few minutes after measurement The test will cause the build up of a cloudy layer on the inside wall of the vial It is important to thoroughly clean the vial after use to remove this layer because subsequent test results may be affected 2 5 3 Interferences Sample Turbidity Turbid samples should be filtered prior to analysis 2 5 4 Accuracy Check User Calibration A stock solution of 1000ppm Cyanuric Acid may be produced by dissolving exactly 1g of Cyanuric Acid in 1 litre of de ionised water check the purity of the Cyanuric acid being used if less than 100 adjust the amount used accordingly The stock solution may then be diluted to give a Cyanuric Acid standard To do this take a portion of the stock solution and make up to 1 litre using de ionised water for example 50ml of stock solution will produce a 50ppm standard To check the accuracy of the meter Prepare a standard in the range 20 80 ppm it is advisable to check a standard at near the concentration usually tested for using th
47. ment If the pink color forms and then rapidly fades this is an indication that the chlorine concentration may be very high If this is the case dilute the sample with de ionized water and retest Multiply the result by the dilution factor used Example if the sample was diluted 2 1 with de ionized water i e 1 part sample water to 1 part de ionized water the result is multiplied by 2 to give the true concentration of the original sample Note Results obtained by this method will not be as accurate as stated in this manual because some chlorine will be lost in the dilution process After use the vial should be cleaned thoroughly to avoid contaminating the next sample Do not use household cleaners as these may have a chlorine demand which will lead to low results on subsequent tests After testing Total Chlorine give extra attention to cleaning the vial as any residual reagent will affect any subsequent Free Chlorine tests It is advisable to use separate vials for Free and Total Chlorine 2 4 3 Interferences Acidity Greater than 250ppm CaCO may cause interference To remove this interference neutralise a separate sample to pH6 7 using 1N Sodium Hydroxide Record the volume used and add the same volume of 1N Sodium Hydroxide to the sample before carrying out the above test procedure Use a multiplication factor to correct for the dilution of the sample Measurement Chlorine Free Total C401 301 201 Colorimeter Alkal
48. ment will continue to read the concentration or pH but with a decreased accuracy until the error is rectified The meter has an auto exit feature whereby it will exits the calibration mode if no key is pressed within 10 minutes or if there is an error during calibration 3 1 Calibration Procedure The standard calibration solutions are to be prepared in the ranges indicated in the specifications Standard solutions should be measured accurately and qualified by a different method or another instrument of higher precision and accuracy NOTE Do not pour liquid directly into the sample well of the instrument Always use a vial The instrument will only accurately measure the sample when vials sealed with the black caps are used The black cap serves as both seal and a light shield NOTE Do not attempt to clean the sample well The optics may be damaged NOTE This instrument is designed to measure solutions contained in the custom made glass vials and therefore the use of other type of sample vials or sample cells may result in inaccurate measurements Calibration Chlorine Free Total Chlorine Dioxide Bromine Ozone C401 301 201 103 104 105 Colorimeter 3 2 Chlorine Free 8 Total Chlorine Dioxide Bromine and Ozone The following procedure describes the calibration procedure for Free Chlorine and Total Chlorine The Chlorine Dioxide C103 Colorimeter follows the calibration procedure for Free Chlorine The Bromine C104
49. meter METER OFF Press MODE and ON OFF keys simultaneously and hold for 2 seconds before releasing Press MODE key to select YES or No To restore facto To retain last calibration 2 READ READ calibration values ENTER ENTER without retrieving factory calibration Meter s Model Number YES Meter s Revision Number n a E N U NI Measurement Selection Mode gt Z The meter is now ready for measurement Figure 9 Restoring Factory Calibration 50 Troubleshooting Guide C401 301 201 101 102 103 104 105 Colorimeter 4 TROUBLESHOOTING GUIDE The C401 301 201 101 102 103 104 105 Colorimeter routinely performs self diagnostics and will automatically generate messages to provide you with specific diagnostic information These messages are for your use and do not indicate a reduction in the performance of the instrument or a failure of any component in the instrument unless otherwise stated in this list LCD Description Corrective Actions Message When measured concentration Ensure sample value is within the OR or pH value is above the measurement range as listed in measurement range chemistry the Specification table in Section test specific 7 When measured concentration Ensure sample value is within the UR or pH value is below the measurement range as listed in the measurement range chemistry Specification table in Section 7 test specific Inappropriate signal to recogniz
50. ned sample to give a pink color In the Total Chlorine test method Combined Chlorine reacts with potassium iodide to form tri iodide ions The tri iodide ions and the Free Chlorine present react with DPD in a conditioned sample to give a pink color The depth of the pink color produced is proportional to the concentration of Chlorine The amount of 525nm light absorbed by the pink color is accurately measured by the meter and then converted into the Chlorine concentration Measurement Cyanuric Acid C401 102 Colorimeter 2 5 Cyanuric Acid 5 90 ppm 1 For water and treated water Switch the meter on by pressing the ON OFF key For single parameter colorimeter the display will momentarily show CYNA before switching directly to STbY as that of step 3 For multi parameter colorimeter the display will indicate the last test performed Press the MODE key repeatedly until CYNA is displayed Press the READ ENTER key to confirm the test parameter The meter will read STbY indicating it is in stand by mode waiting for either blanking or measurement READ ENTER Cyanuric Acid test selection Multi Parameter Colorimeter Select a clean and dry vial un screw the cap and fill with sample water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently push the vial fully into the meter w
51. orrection Factor to give the true result If reagents are added from the supplied dropper bottles then 25 drops is equal to 1ml Example 50ml sample is neutralised using 50 drops of 1N Sulphuric Acid and each drop is 0 04 ml Initial Sample Volume 50ml Volume of Neutralising Reagent added 50drops X 0 04 ml 2ml Final Volume 50ml 2ml 52ml Correction Factor 52 50 1 04 A test result of 1 00ppm would then become 1 00ppm X 1 04 1 04ppm 2 7 4 Accuracy Check User Calibration Producing chlorine standards is a difficult procedure that should only be attempted by trained laboratory staff Details of preparation techniques are not provided in this document The prepared chlorine standard may be used to check the accuracy of the meter or to re calibrate the meter In almost all cases it is recommended to use the default factory calibration To check the accuracy of the meter Prepare a standard solution of known concentration within the range of the instrument It is advisable to prepare a standard near to the concentration value usually tested with the meter Use this standard in place of the sample water in the above test method Repeat the measurement 5 7 times with different sachets and 27 Measurement Chlorine Dioxide C103 Colorimeter average the results The result obtained should be approximately the value of the standard used please refer to instrument s specifications for data on meter precision and ac
52. pm to 75 ppm in an incremental NE A mm ae N O circular manner 43 Calibration Cyanuric Acid C401 102 Colorimeter 11 Select another clean vial un screw the cap and fill it with 10 ml of the prepared Cyanuric Acid standard solution fill up to the line on the vial 12 Selecta Cyanuric Acid Reagent Sachet Open the sachet and tip the contents into the vial containing the calibration standard 13 Replace the cap ensuring it is screwed on finger tight to the vial Shake the vial for approximately one paul minute until the powder has dissolved as Note a small amount of the powder may remain un dissolved in the vial but this will not affect the measurement 14 Insert the vial fully into the sample well of the meter whilst again aligning the Y mark on the vial with the A mark on the meter 15 Wait for two minutes then press the READ ENTER key within five minutes from the time the Cyanuric Acid reagent was added to the vial 16 The meter will display Rd whilst the calibration standard is being measured and then displays SAVE to prompt for calibration acceptance and saving of calibration data READ ENTER J 17 Press the READ ENTER key The meter will now accepts the calibration value and momentarily display HoLD and CAL annunciator before returning to the beginning of the calibration as in step 3 yanuric Acid Sample 70 pp 18 To continue with another calibration
53. r Phenol Red Kit Boos 8 0 Cyanuric Acid Reagent Kit and batteries in a rugged carrying case Sample Vials pack of 3 vials ECTN100CUVKT 35653 55 pH Indicator Phenol Red Kit 94X377004 35645 60 Cyanuric Acid Reagent Kit 94X377003 35645 62 Chlorine Free DPD Reagent Kit 94X377001 35645 64 Chlorine Total DPD Reagent Kit 94X377002 35645 66 Chlorine Dioxide Glycine Reagent Kit 94X377005 35645 70 Specifications C401 301 201 101 102 103 104 105 Colorimeter 7 SPECIFICATIONS CHLORINE FREE amp TOTAL Automatic Range Selection 0 1 99 ppm 2 0 6 0 ppm Resolution 0 01 ppm 0 1 99 ppm 0 1 ppm 2 0 6 0 ppm Accuracy 0 02 ppm 0 1 99 ppm 0 2 ppm 2 0 6 0 ppm CYANURIC ACID Automatic Range Selection 5 90 ppm Resolution 1 ppm 5 90 ppm Accuracy 4 ppm pH Automatic Range Selection 5 9 8 2 pH Resolution 0 1 pH 5 9 8 2 pH Accuracy 0 1 pH 5 9 8 2 pH CHLORINE DIOXIDE Automatic Range Selection 0 3 79 ppm 3 8 11 4 ppm 0 01 ppm 1 digit 0 3 79 ppm Resoluti dk 0 1 ppm 1 digit 3 8 11 4 ppm 0 02 2 digits 0 3 7 house ppm dig s 0 3 79 ppm 0 2 ppm 2 digits 3 8 11 4 ppm BROMINE Automatic Range Selection 0 4 49 ppm 4 5 13 5 ppm 0 02 ppm 1 digit 0 4 49 ppm Resolution a 0 2 ppm 1 digit
54. sample before carrying out the above test procedure Use a multiplication factor to correct for the dilution of the sample Alkalinity Greater than 250ppm CaCO may cause interference To remove this 31 Measurement Bromine C104 Colorimeter interference neutralise a separate sample to pH6 7 using 1N Sulphuric Acid Note the volumes used and add the same volume of 1N Sulphuric Acid to the sample before carrying out the above test procedure Use a multiplication factor to correct for the dilution of the sample Hardness No effect at less than 2000ppm CaCOs Monochloramine Monochloramine will cause a gradual increase in the Free Chlorine result over time Take the test result within 1 minute of adding the reagent sachet to avoid these errors Oxidants including Chlorine Chlorine Dioxide lodine and Ozone These will interfere with the test method at all levels It is recommended that an alternative test method is used if more than any two of these species are present Oxidised Manganese or Oxidised Chromium All levels will cause interference To remove this interference 1 Testa 10ml sample as described in the above procedure 2 Adjust the pH of a separate 10ml sample to pH6 7 using 1N Sodium Hydroxide or 1N Sulphuric Acid 3 Add 1 drop of 20 Potassium lodide Solution swirl to mix and then wait 60 seconds 4 Add 3 drop of 5g l Sodium Arsenite Solution and swirl to mix 5 Use this as the sample in the above
55. th the A mark on the meter Wait for two minutes and then press the READ ENTER key within four minutes from the time the DPD Total reagent was added to the vial The meter will flash OZ whilst the measurement is taken It will then display the Ozone concentration in parts per million ppm READ ENTER Ozone 20 Sample ppm L O 35 Measurement Ozone C105 Colorimeter Ozone Measuring Hints amp Tips 2 9 1 Sample Collection Ozone determination must take place as soon as possible after the sample is taken or else low results may be obtained Plastic containers should not be used to collect the sample because these may have a high chlorine demand which will lead to low reading results It is advisable to wash the container with sample water before the sample is collected Avoid agitating the sample excessively as this may also lead to low results 2 9 2 Sample Measurement If the pink color forms and then rapidly fades this is an indication that the ozone concentration may be very high If this is the case dilute the sample with de ionized water and retest Multiply the result by the dilution factor used Example if the sample was diluted 2 1 with de ionized water i e 1 part sample water to 1 part de ionized water the result is multiplied by 2 to give the true concentration of the original sample Note Results obtained by this method will not be as accurate as stated in this manual because some chlorine w
56. the accuracy of the meter or to re calibrate the meter In almost all cases it is recommended to use the default factory calibration To check the accuracy of the meter Prepare a standard solution of known concentration within the range of the instrument It is advisable to prepare a standard near to the concentration value usually tested by the meter Use this standard in place of the sample water in the above test method Repeat the measurement 5 7 times with different sachets and average the results The result obtained should be approximately the value of the standard used please refer to instrument s specifications for data on meter precision and accuracy To re calibrate the meter All instruments are factory calibrated and user calibration is not recommended However if a Chlorine standard can be prepared measured accurately and qualified by a different method titration for example or another instrument of higher precision and accuracy then a Chlorine standard in the 4 1 5 0 ppm Cl range can be used Please refer to Section 3 2 Chlorine Free amp Total Chlorine Dioxide Bromine and Ozone for details 33 Measurement Ozone C105 Colorimeter 2 9 Ozone 0 4 1 ppm O DPD method for Ozone applicable to water treated water wastewater and seawater Note Adapted from Standard methods for the Examination of Water and Wastewater 1 Switch the meter on by pressing the ON OFF key The display will show
57. tically gently squeeze 20 drops of Phenol Red into the contents of the vial nae Replace the cap onto the Phenol Red bottle Be careful not to over tighten the cap ED Replace the cap onto the vial ensuring it is screwed on finger tight Invert the vial several times to mix Gently place the vial into the sample well of the instrument whilst again aligning the Y mark on the vial with the A mark on the meter Wait for one minute and then press the READ ENTER key within 3 minutes from when the time the Phenol Red was added to the vial The meter will display Rd whilst the calibration standard is being measured and then displays SAVE to prompt for calibration acceptance and saving of calibration data READ ENTER Rd NO Press the READ ENTER key The meter will now accepts the calibration value and momentarily display HoLD and CAL annunciator before returning to the beginning of the calibration as in step 3 To continue with another calibration press the MODE key to select the desired calibration mode for multi parameter colorimeter To exit the calibration mode press the ZERO key to return to the measurement mode READ peto Press Mode to select ENTER CAL CAL another calibration test LI ma D a gt LI L Press ZERO to return to measurement mode 47 Calibration pH C401 301 101 Colorimeter NOTE If you wish to abort this calibration process do NOT press the READ ENT
58. tion items must be carefully packed to prevent damage in shipment and insured against possible damage or loss Eutech Instruments Oakton Instruments will not be responsible for damage resulting from careless or insufficient packing A restocking charge will be made on all unauthorized returns NOTE Eutech Instruments Pte Ltd Oakton Instruments reserve the right to make improvements in design construction and appearance of products without notice 56 For more information on Eutech Instruments Oakton Instruments products contact your nearest distributor or visit our website listed below Eutech Instruments Pte Ltd Blk 55 Ayer Rajah Crescent 04 16 24 Singapore 139949 Tel 65 6778 6876 Fax 65 6773 0836 E mail marketing eutechinst com Web site www eutechinst com Oakton Instruments P O Box 5136 Vernon Hills IL60061 USA Tel 1 888 462 5866 Fax 1 847 247 2984 E mail info 4oakton com Web site www 4oakton com Distributed by
59. usehold cleaners as these may have a chlorine dioxide demand which will lead to low results on subsequent tests 2 7 3 Interferences Acidity Greater than 250ppm CaCO may cause interference To remove this interference neutralise a separate sample to pH6 7 using 1N Sodium Hydroxide Record the volume used and add the same volume of 1N Sodium Hydroxide to the sample before carrying out the above test procedure Use a multiplication factor to correct for the dilution of the sample Alkalinity Greater than 250ppm CaCO may cause interference To remove this interference neutralise a separate sample to pH6 7 using 1N Sulphuric Acid Note the volume used and add the same volume of 1N Sulphuric 25 Measurement Chlorine Dioxide C103 Colorimeter Acid to the sample before carrying out the above test procedure Use a multiplication factor to correct for the dilution of the sample Chlorine Chlorine levels greater than 6ppm may interfere Use two sachets of Chlorine Dioxide Glycine Reagent in step 5 to remove the interference Hardness No effect at less than 2000ppm CaCO3 Metals and Chlorine in Combination If chlorine is present some metals may interfere with the test Use two sachets of Chlorine Dioxide Glycine Reagent in step 5 to remove the interference Monochloramine Monochloramine will cause a gradual increase in the Chlorine Dioxide result over time Take the test result within 1 minute of adding the reagent
60. usiconschscatscbscctacisttuseducedesinivusdcntuntseniedaesedepsussucunieadvantcascundcsedanaoy 1 1 UNPACKING C401 301 201 101 102 103 104 105 COLORIMETER AND ACCESSORIES ccscceeeeteeeeees 2 2 DISPLAY ees 3 KEYS AND F UNCTIONS vessusts iccceezcassectseteacesacgas daevadabaseduacaseusseveaisdguacaneceszcuadsduacacsvaisvasca coasts tavatasaces E 4 4 BATTERY INSTALLATION EE RE RR EE EE N N EE a aaaea 5 MEASUREMENT EER EE EN EE EE Ee EE ED 6 2 1 GENERAL INFORMATION RR EE EE EE N EE 2 2 PREPARATION OF SAMPLE VIAL ee 2 3 MEASUREMENT PROCEDURE ici casccssscsssccsesgusaaeyacseszasesssaseesacesseasasconeavesseazssnscessaevsneesiagonesseseasecgasgasnaceess 2 4 CHLORINE FREE amp TOTAL 0 6PPM CLo ccesceesecesseeeeceneceaeceneceneceneeeeesaeceaeseaesenecenessaesaeesaeeseneseneeeneees Chlorine Free amp Total Measuring Hints amp Tips 2 4 1 Sample Collection uu eee is 242 OE UUR EE EE EE aaa A Danae KA A RE EER EE EE OE EE steele 244 Accuracy Check User Calibration 2 4 5 Chemistry ese ee ee ee 2 5 CYANURIC ACID 5 90 PPM Cyanuric Acid Measuring Hints amp Tips 2 5 1 Sample Collection 2 5 2 Sample Measurement 2 5 3 Interferences oo eee 2 5 4 Accuracy Check User Calibration 2 5 5 Chemistry ee eee ee 2 6 PH 5 9 8 2 PH UNITS pH Measuring Hints amp Tips 2 6 1 Sample Collection 2 6 2 Sample Measurement 2 6 3 Interferences o oo

Oakton C401 301 201 101 102 103 104 105 Manual

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