LaMotte COD3 Plus Operator's Manual
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LaMotte COD3 Plus Operator's Manual

Colorimeter
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Download this manual See also: Operator's Manual
1925-MN-V3
10.10.18
Warning! This set contains chemicals
that may be harmful if misused. Read
cautions on individual containers
carefully. Not to be used by children
except under adult supervision.
1925-MN-V3.indd
COD3
Colorimeter
Operator's
Firmware Version 2.10 and greater
Plus
Manual
PO Box 329 • Chestertown • MD • 21620
800-344-3100 • 410-778-3100
www.lamotte.com

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Summary of Contents for LaMotte COD3 Plus

  • Page 1 Warning! This set contains chemicals that may be harmful if misused. Read cautions on individual containers carefully. Not to be used by children except under adult supervision. PO Box 329 • Chestertown • MD • 21620 800-344-3100 • 410-778-3100 www.lamotte.com 1925-MN-V3.indd...

  • Page 3: Table Of Contents

    COD3 Plus  Kit Contents ............................5  Accessories ............................. 5  General Testing Procedures ........................ 6  Testing with LaMotte Pre-Programmed Tests ................6  Calibrating LaMotte Pre-Programmed Tests ................. 8 SET UP  Setting the Clock ..........................11  Logging Data ............................12 ...
  • Page 4 GENERAL INFORMATION  Packaging and Delivery ........................24  General Precautions ...........................24  Safety Precautions ..........................24  Limits of Liability ..........................24  Specifi cations ............................25  CE ................................26  IP67 ................................26  Warranty ..............................26  Register Your Meter ..........................26 TROUBLE SHOOTING GUIDE ...

  • Page 5: Cod3 Plus  Kit Contents

    Test Tubes, with Caps Code 0290 COD/UDV Adapter Code 1724 USB Wall Adapter Code 1721 USB Cable Code 1720 COD3 Plus Colorimeter Manual Accessories Test Tubes, with Caps Code 0290-6 Replacement Chamber Code 3-0038 USB Cable Code 1720 USB Wall Adapter...

  • Page 6: General Testing Procedures

     GENERAL TESTING PROCEDURES The following is a step-by-step example of how to run tests from the Testing Menu. These test procedures are designed to be used with LaMotte SMART Reagent Systems. LaMotte Company continuously updates the list of pre-programmed tests as the calibrations become available.
  • Page 7 %T/Abs. Press to escape to previous EXIT menus. NOTE: The menus loop in this screen so either will lead to the menu selection needed. COD3 Plus Colorimeter 10.18...

  • Page 8: Calibrating Lamotte Pre-Programmed Tests

    The LaMotte Pre-Programmed tests are standardized with one standard solution. To standardize over the full range of the test, the concentration of the standard should be chosen from the high end of the range.
  • Page 9 001/500 007 Ammonia-N LRS 8. Press to select Calibrate. ENTER A reverse font (light background 0.28 ppm with dark characters) will appear to indicate that the reading can , =Edit, ENTER=Save be adjusted. +ENTER=Default 12:00:00 001/500 COD3 Plus Colorimeter 10.18...
  • Page 10 EXIT %T/Abs Calibrate Press at any ENTER time to return to the default 12:00:00 001/500 value. The calibration has now been standardized and can be used for testing. Scroll to Scan Blank and begin testing. COD3 Plus Colorimeter 10.18...

  • Page 11: Setting The Clock

    Editing Menu 3. Press to select the fi nal ENTER character. The time and date Set Clock will be saved and the meter will Logging return to the Editing Menu. Factory Setup Set Power Save 12:00:00 001/500 COD3 Plus Colorimeter 10.18...

  • Page 12: Logging Data

    Logging Disabled Erase Log 12:00:00 001/500 Editing Menu 4. Press ENTER . The screen will display Storing... for about 1 Set Clock second and return to the Editing Logging Menu. Factory Setup Set Power Save 12:00:00 001/500 COD3 Plus Colorimeter 10.18...

  • Page 13: Factory Setup

    12:00:00 001/500 Editing Menu 4. Press . The screen will ENTER display Storing..for about 1 Set Clock second and the meter will retun Logging to the Editing Menu. Factory Setup Set Power Save 12:00:00 001/500 COD3 Plus Colorimeter 10.18...

  • Page 14: Setting Backlight Time

    001/500 Editing Menu 4. Press ENTER . The screen will display Storing... for about 1 Logging second and the meter will return Factory Setup to the Editing Menu. Set Power Save Set Backlight Time 12:00:00 001/500 COD3 Plus Colorimeter 10.18...

  • Page 15: Selecting A Language

    Bluetooth Menu Select Language 12:00:00 001/500 NOTE: If meter unintentionally switches to another language, use the procedure above to reset the meter to the desired language. For example, to reset the meter to English: Turn meter on. COD3 Plus Colorimeter 10.18...

  • Page 16: Looping Menus

    SECOND CHOICE SECOND CHOICE THIRD CHOICE THIRD CHOICE ANOTHER ANOTHER LAST CHOICE AND ANOTHER AND ANOTHER The feature called Looping Menu can be turned on and off in the Editing Menu. The default setting is ON. COD3 Plus Colorimeter 10.18...

  • Page 17: Computer Connection  Output

    The meter may be interfaced with any Windows-based 64 bit computer by using the LaMotte WaterLink Connect 2 program and a USB cable. The program will store test information and results in a local database, and allow for exporting this data to a comma separated value (CSV) fi...

  • Page 18: Battery Replacement

    LaMotte Company. Battery replacement must be performed at a LaMotte authorized repair facility. The water resistant housing of this meter should not be opened by the user. Contact LaMotte Company by phone (1-800-344-3100) or email (tech@lamotte.com) for a return authorization number.

  • Page 19: Meter Disposal

    The menus can be displayed in seven diff erent languages. The LaMotte tests are precalibrated for LaMotte reagent systems.The colorimeter displays the result of these tests directly in units of concentration. The optics feature a colored LED. The LED has a corresponding silicon photoiode with an integrated interference fi...

  • Page 20: The Keypad

    If more selections are available they can be viewed by pressing the arrow buttons to scroll the other menu selections into the menu selection window. Think of the menu selections as a vertical list in the display that moves up COD3 Plus Colorimeter 10.18...
  • Page 21 Large format graphic information, such as test results or error messages or the LaMotte logo is displayed. The top two lines of the display are used to display information in a large, easy to read format. The menus work in the same way as previously described but two lines of the menu are visible at the bottom of the display.

  • Page 22: Tubes And Chambers

    It is imperative that the tubes and light chamber be clean and dry. The outside of the tubes should be dried with a clean, lint-free cloth or disposable wipe before they are placed in the meter chamber. COD3 Plus Colorimeter 10.18...

  • Page 23: Sample Holders

    Add 10 mL volumes of deionized water to the container and mix. Transfer 10 mL of the diluted sample to the colorimeter tube and follow the test procedure. Repeat the dilution and testing procedures until the result falls within the range of COD3 Plus Colorimeter 10.18...

  • Page 24: General Information

    NEVER PUT WET TUBES IN THE METER.  SAFETY PRECAUTIONS Read the labels on all LaMotte reagent containers prior to use. Some containers include precautionary notices and fi rst aid information. Certain reagents are considered hazardous substances and are designated with a * in the instruction manual.

  • Page 25: Specifi Cations

    500 test results stored for download to a PC Waterproof IP67 with USB port plug in place Dimensions (LxWxH) 3.5 x 7.5 x 2.5 inches, 8.84 x 19.05 x 6.35 cm Weight 13 oz, 362 g (meter only) †525 nm and 568 nm only COD3 Plus Colorimeter 10.18...

  • Page 26: Ip67

     IP67 CERTIFICATION The Smart3 meets IP67 standards for protection against dust and immersion only when the USB port plug is in place. Documentation is available at www.lamotte.com.  WARRANTY LaMotte Company warrants this instrument to be free of defects in parts and workmanship for 2 years from the date of shipment.

  • Page 27: Error Messages

    This can be done following the user calibration described on page 6. If the user calibration fails to properly adjust the meter then the meter should be returned to LaMotte Company for recalibration. (See page 8).

  • Page 28: Troubleshooting Guide

    Dilute sample and acceptable range. test again. Unusually large Incorrect standards Use fresh 0.0 negative or positive used to calibrate meter. standard in clean readings when tube. Reset meter performing calibration to factory default settings. Recalibrate meter. COD3 Plus Colorimeter 10.18...

  • Page 29: Test Procedures (Alphabetical Order)

    COD3 Plus Colorimeter Test Procedures Firmware Version 2.10 and greater...
  • Page 31 LaMotte Company continuously updates the list of pre-programmed tests as the calibrations become available. Call LaMotte Technical Services at 1-800-344-3100 (410-778-3100 outside the USA) or email at tech@lamotte.com for a current list of available calibrations and more information. # of...
  • Page 32 # of Test Factor (Test #) Range (ppm) Test Method (# of Reagents) Tests Sulfi de-Low Range (090) 0.00–1.50 0.06 Methylene Blue (3) Tannin (093) 0.0–10.0 Tungsto-molybdophosphoric Acid (2) Turbidity (095) 0–400 FAU Absorption (0) – Zinc-Low Range (097) 0.00–3.00 0.05 Zincon (6)

  • Page 33: Code

    *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 34 There are few interferences in most natural waters. High concentrations of reducing agents, such as hydrazine, react with the chlorine donor and can result in negative interferences. Color and turbidity can also interfere. Ammonia Nitrogen, Low Range COD3 Plus Colorimeter 10.16...
  • Page 35 Then follow the above procedure to perform the test on a distilled or deionized water sample. This test result is the reagent blank. Subtract the reagent blank from all COD3 Plus Colorimeter 10.16 Ammonia Nitrogen, Low Range...
  • Page 36 To determine the percentages of Unionized and Ionized Ammonia-Nitrogen, consult the Appendix. NOTE: It is strongly suggested that a reagent blank be determined to account for any contribution to the test result by the reagent system. To determine the reagent Ammonia Nitrogen, Low Range COD3 Plus Colorimeter 10.16...
  • Page 37 This test result is the reagent blank. Subtract the reagent blank from all subsequent test results of unknown samples. It is necessary to determine the reagent blank only when a new lot number of reagents is obtained. COD3 Plus Colorimeter 10.16 Ammonia Nitrogen, Low Range...
  • Page 38 Ammonia Nitrogen, Low Range COD3 Plus Colorimeter 10.16...

  • Page 39: Code

    *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 40 4°C or 28 days at –20°C. INTERFERENCES: Sample turbidity and color may interfere. Turbidity may be removed by a fi ltration procedure. Color interference may be eliminated by blanking the instrument with a sample blank. Ammonia Nitrogen, High Range COD3 Plus Colorimeter 10.16...
  • Page 41 This test result is the reagent blank. Subtract the reagent blank from all subsequent test results of unknown samples. It is necessary to determine the reagent blank only when a new lot number of reagents is obtained. COD3 Plus Colorimeter 10.16 Ammonia Nitrogen, High Range...
  • Page 42 Ammonia Nitrogen, High Range COD3 Plus Colorimeter 10.16...

  • Page 43: Code

    *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 44 SAMPLE HANDLING & Store samples in polyethylene bottles. Do not use borate PRESERVATION: detergents or glassware. INTERFERENCES: Interferences in drinking water are unlikely. Manganese, zirconium, chromium, titanium, copper, vanadium, aluminum, beryllium and iron may cause high results. Boron COD3 Plus Colorimeter 10.16...
  • Page 45 18. Insert tube into meter chamber, close lid and select Scan Sample. Record result in ppm boron. 19. Press to turn colorimeter off or press the EXIT to exit to a previous menu or make another menu selection. COD3 Plus Colorimeter 10.16 Boron...
  • Page 46 Boron COD3 Plus Colorimeter 10.16...

  • Page 47: Code

    *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 48 This test result is the reagent blank. Subtract the reagent blank from all subsequent test results of unknown samples. It is necessary to determine the reagent blank only when a new lot number of reagents is obtained. Cobalt COD3 Plus Colorimeter 10.16...
  • Page 49 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 50 When scanning samples in 16 mm tubes, such as COD, the sample chamber lid can not be closed. Use the COD adapter to minimize stray light interference. To further reduce stray light interference, do not Scan Sample in direct sunlight. COD, High Range COD3 Plus Colorimeter 10.16...
  • Page 51 NOTES: Reagents are light sensitive. Unused reagents should be stored in the shipping container, and in the refrigerator if possible, until needed. COD3 Plus Colorimeter 10.16 COD, High Range...
  • Page 52 15 minute intervals while the vials are still hot until the reading remains unchanged. The vials should be cooled to room temperature before the fi nal measurement is taken. COD, High Range COD3 Plus Colorimeter 10.16...
  • Page 53 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 54 When scanning samples in 16 mm tubes, such as COD, the sample chamber lid can not be closed. Use the COD adapter to minimize stray light interference. To further reduce stray light interference, do not Scan Sample in direct sunlight. COD, Standard Range COD3 Plus Colorimeter 10.16...
  • Page 55 NOTES: Reagents are light sensitive. Unused reagents should be stored in the shipping container, and in the refrigerator if possible, until needed. COD3 Plus Colorimeter 10.16 COD, Standard Range...
  • Page 56 15 minute intervals while the vials are still hot until the reading remains unchanged. The vials should be cooled to room temperature before the fi nal measurement is taken. COD, Standard Range COD3 Plus Colorimeter 10.16...
  • Page 57 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 58 When scanning samples in 16 mm tubes, such as COD, the sample chamber lid can not be closed. Use the COD adapter to minimize stray light interference. To further reduce stray light interference, do not Scan Sample in direct sunlight. COD, High Range COD3 Plus Colorimeter 10.16...
  • Page 59 NOTES: Reagents are light sensitive. Unused reagents should be stored in the shipping container, and in the refrigerator if possible, until needed. COD3 Plus Colorimeter 10.16 COD, High Range...
  • Page 60 The reacted blank will be stable if stored in the dark. To eliminate error caused by contamination, wash all glassware with 20% sulfuric acid. For greater accuracy, a minimum of three repetitions should be performed and the results averaged. COD, High Range COD3 Plus Colorimeter 10.16...
  • Page 61 SAMPLE HANDLING & Collect all samples in clean glassware. Determine color PRESERVATION: as soon as possible to avoid biological or chemical changes that could occur in the sample during storage. INTERFERENCES: Turbidity will interfere. Filter before testing. COD3 Plus Colorimeter 10.16 Color...
  • Page 62 9. Insert tube with sample water, close lid and select Scan Sample. Record result in color units. 10. Press to turn the colorimeter off or press EXIT to exit to a previous menu or make another menu selection. Color COD3 Plus Colorimeter 10.16...
  • Page 63 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 64 It is necessary to determine the reagent blank only when a new lot number of reagents are obtained. The reaction may stain the tubes. Scrub tubes thoroughly after each use. Copper, Cuprizone COD3 Plus Colorimeter 10.16...
  • Page 65 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 66 9. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. NOTE: The reaction may stain the tubes. Scrub the tubes thoroughly after each use. COPPER, Thiocarbamate COD3 Plus Colorimeter 10.16...
  • Page 67 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 68 10. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. NOTE: For the most accurate results, the sample and reagents should be at 25 ±4°C. Cyanuric Acid COD3 Plus Colorimeter 10.16...
  • Page 69 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 70 Steps 1 through 4 below describe proper sampling technique in shallow water. For sample collection at depths beyond arm’s reach, special water sampling apparatus is required (e.g. the LaMotte Water Sampling Chamber, Code 1060; Model JT-1 Water Samplers, Code 1077; Water Sampling Outfi t, Code 3103; or Water Sampling Bottle, Code 3-0026).
  • Page 71 8. Remove BLANK from colorimeter, insert SAMPLE tube into chamber, close lid and select Scan Sample. Record result. 9. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. COD3 Plus Colorimeter 10.16 Dissolved Oxygen...
  • Page 72 Dissolved Oxygen COD3 Plus Colorimeter 10.16...
  • Page 73 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 74 5000 mg/L Aluminum (Al 0.1 mg/L Iron (Fe 10 mg/L –2 Sulfate (SO 200 mg/L Color and turbidity must be removed or compensated for in the procedure. Temperature should be maintained within 5°C of room temperature. Fluoride COD3 Plus Colorimeter 10.16...
  • Page 75 Repeat steps 6 and 7 . 10. Insert tube into chamber, close lid and select Scan Sample. Record result. 11. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. COD3 Plus Colorimeter 10.16 Fluoride...
  • Page 76 Fluoride COD3 Plus Colorimeter 10.16...
  • Page 77 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 78 This test result is the reagent blank. Subtract the reagent blank from all subsequent test results of unknown samples. It is necessary to determine the reagent blank only when a new lot number of reagents is obtained. Hydrazine COD3 Plus Colorimeter 10.16...
  • Page 79 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 80 9. At the end of the two minute waiting period, mix, insert tube into chamber, close lid and select Scan Sample. Record result. 10. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. Manganese, High Range COD3 Plus Colorimeter 10.16...
  • Page 81 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 82 Then follow the above procedure to perform the test on a distilled or deionized water sample. This test result is the reagent blank. Subtract the reagent blank from all subsequent test results of unknown samples. Nickel COD3 Plus Colorimeter 10.16...
  • Page 83 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 84 14. Insert reacted Sample Tube into chamber, close lid and select Scan Sample. Record result. 15. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. Ozone, Indigo COD3 Plus Colorimeter 10.16...
  • Page 85 12. Scroll to and select 072 Ozone IB HR from menu. 13. Insert the Reagent Blank tube into chamber, close lid and select Scan Blank. 14. Insert reacted Sample Tube into chamber, close lid and select Scan Sample. Record result. COD3 Plus Colorimeter 10.16 Ozone, Indigo...
  • Page 86 NOTE: HR Reagent must be made fresh each week. If reagent is refrigerated, it may be kept up to 3 weeks. Ozone, Indigo COD3 Plus Colorimeter 10.16...
  • Page 87 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 88 , when used as the preservative, interferes when the chloride levels are low (less than 50 mg/L). This interference is overcome by spiking samples with a minimum of 50 mg/L of sodium chloride. Phosphate, Low Range COD3 Plus Colorimeter 10.16...
  • Page 89 9. At end of 5 minute waiting period, mix, insert tube into chamber, close lid and select Scan Sample. Record result. 10. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. COD3 Plus Colorimeter 10.16 Phosphate, Low Range...
  • Page 90 Phosphate, Low Range COD3 Plus Colorimeter 10.16...
  • Page 91 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 92 8. After 5 minute waiting period, mix, insert tube into chamber, close lid and select Scan Sample. Record result. 9. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. Phosphate, High Range COD3 Plus Colorimeter 10.16...
  • Page 93 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 94 It is necessary to determine the reagent blank only when a new lot number of reagents are obtained. For the most accurate results, the sample and reagents should be at 25±4°C. Potassium COD3 Plus Colorimeter 10.16...
  • Page 95 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 96 Since silica is a component of glass waste and a common contaminant, it is suggested to run a reagent blank using silica-free water. The blank value is subtracted from the sample concentrations. Silica, Low Range COD3 Plus Colorimeter 10.16...
  • Page 97 This test result is the reagent blank. Subtract the reagent blank from all subsequent test results of unknown samples. It is necessary to determine the reagent blank only when a new lot number of reagents are obtained. COD3 Plus Colorimeter 10.16 Silica, Low Range...
  • Page 98 Silica, Low Range COD3 Plus Colorimeter 10.16...
  • Page 99 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 100 INTERFERENCES: Sulfi des and large amounts of iron interfere. Color and turbidity may be removed by standardizing the instrument with the original water sample. Silica, High Range COD3 Plus Colorimeter 10.16...
  • Page 101 NOTE: To extend the range to 100 ppm, perform a 2:1 dilution of water sample, with silica-free water. Perform test and multiply result by 2. COD3 Plus Colorimeter 10.16 Silica, High Range...
  • Page 102 Silica, High Range COD3 Plus Colorimeter 10.16...
  • Page 103 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 104 A white fi lm is deposited on the inside of test tubes as a result of the sulfate test. Thoroughly clean and rinse test tubes after each test. For the most accurate results, samples and reactions should be at 25±4°C. Sulfate, High Range COD3 Plus Colorimeter 10.16...
  • Page 105 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 106 High concentrations of sulfi de will inhibit the reaction, but dilution of the sample prior to analysis eliminates this problem. Sulfi de, Low Range COD3 Plus Colorimeter 10.16...
  • Page 107 10. Insert tube into chamber, close lid and select Scan Sample. Record result. 11. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. COD3 Plus Colorimeter 10.16 Sulfi de, Low Range...
  • Page 108 Sulfi de, Low Range COD3 Plus Colorimeter 10.16...
  • Page 109 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 110 It is necessary to determine the reagent blank only when a new lot number of reagents is obtained. For the most accurate results, the sample and reagents should be at 20 ±2°C. Tannin COD3 Plus Colorimeter 10.16...
  • Page 111 RANGE: 0–500 FAU (Formazin Attenuation Units) MDL: 3 FAU METHOD: Absorptimetric, 180° detector SAMPLE HANDLING & Measure sample as soon as possible after collection. PRESERVATION: INTERFERENCES: Check for stray light interference (see page 69). COD3 Plus Colorimeter 10.16 Turbidity...
  • Page 112 9. Press to turn colorimeter off or press EXIT to exit to a previous menu or make another menu selection. NOTE: For the most accurate results, the sample should be at 25 ±4°C. Turbidity COD3 Plus Colorimeter 10.16...
  • Page 113 Store in amber glass. 5. The concentration of this stock solution is 400 FTU. This stock solution is stable for one month. Dilutions from this stock solution should be prepared fresh daily with low turbidity water. COD3 Plus Colorimeter 10.16 Turbidity...
  • Page 114 Turbidity COD3 Plus Colorimeter 10.16...
  • Page 115 *WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com. Search for the four digit reagent code number listed on the reagent label, in the contents list or in the test procedures.
  • Page 116 INTERFERENCES: The following ions interfere in concentrations greater than those listed. mg/L mg/L Cd(II) Cr(III) Al (III) Ni(II) Mn (II) Co (II) Fe (III) CrO4(II) Fe (II) Zinc COD3 Plus Colorimeter 10.16...
  • Page 117 This test result is the reagent blank. Subtract the reagent blank from all subsequent test results of unknown samples. It is necessary to determine the reagent blank only when a new lot number of reagents is obtained. COD3 Plus Colorimeter 10.16 Zinc...
  • Page 118 7.17 12.27 10.10 5.55 4.41 7.98 6.28 11.18 8.87 14.97 12.40 Freshwater data from Trussel (1972). Seawater values from Bower and Bidwell (1978). Salinity for Seawater values = 34% at an ionic strength of 0.701m. Appendix COD3 Plus Colorimeter 10.16...
  • Page 119 1. The percentage from the table is 11.18% (or 0.1118). 2. 1 ppm Total Ammonia-Nitrogen x 0.1118 = 0.1118 ppm Unionized Ammonia- Nitrogen. 3. Total Ammonia-Nitrogen 1.0000 ppm Unionized Ammonia-Nitrogen - 0.1118 ppm Ionized Ammonia-Nitrogen 0.8882 ppm COD3 Plus Colorimeter 10.16 Appendix...

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