TEST INSTRUCTIONS - Geotech Environmental Equipment

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INTERFERENCES: Volatile organic compounds are not oxidized to the extent that they are in the vapor above the digestion solution. Therefore, they do not contribute to the COD reading. Contains mercury sulfate to prevent interference from chloride. Nitrite gives a positive interference of 1.1 ppm O2 per ppm NO2–N, which is insignificant unless nitrite concentrations are very high. Other reduced inorganic compounds are stoichiometrically oxidized, causing a positive interference. Corrections can be made for these compounds based upon their stoichiometry and concentrations. Whenscanningsamplesin16mmtubes,suchasCOD,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–HR 2/3 Smart2 TEST PROCEDURES 03.05
PROCEDURE Use COD adapter (see p. 22). 1. Homogenize sample if necessary. 2. Preheat COD heater block to 150±2°C. 3. Remove cap from COD tube vial. Hold vial at a 45° angle. Use a graduated pipet, to carefully add 0.2 mL sample water allowing the sample to run down the side of the vial. 4. Cap and mix thoroughly. 5. Rinse the outside of the vial with distilled water. Wipe dry with a paper towel. 6. Repeat steps 3 through 5 using 0.2 mL distilled water. This is the reagent blank. 7. Place vials in preheated COD block heater and maintain temperature at 150±2°C for two hours. 8. At the end of the heating period turn the heater off. Wait 20 minutes for the vials to cool to 120°C or less. 9. Remove vials from block heater. Invert several times to mix. 10. Allow to cool to room temperature. 11. Press and hold ON button until colorimeter turns on. 12. Press ENTER to start. 13. Press ENTER to select TESTING MENU. 14. Select ALL TESTS (or another sequence containing 27 COD HR)from PROGRAMMED TESTS menu. 15. Wipe the blank vial with a damp towel to remove fingerprints and smudges. Wipe with a dry towel. 16. Scroll to and select 27 COD HR from menu. 17. Insert reagent blank tube into chamber. Select SCAN BLANK. 18. Remove tube from colorimeter. 19. Insert digested water sample tube into chamber. Select SCAN SAMPLE. Record result. For the most accurate results, take three readings on each sample and average the results. 20. Press OFF button to turn colorimeter off or press EXIT button to exit to a previous menu or make another menu selection. NOTES: Reagents are light sensitive. Unused reagents should be stored in the shipping container, and in the refrigerator if possible, until needed. A reagent blank should be run with each set of samples and with each lot of reagents. 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. Smart2 TEST PROCEDURES 03.05 COD–HR 3/3
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v.2.3 • 1.07 1919-test SMART 2Col
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Range #of Test Factor (Test #) (ppm
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ALKALINITY-UDV UNIT DOSE VIALS •
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ALUMINUM ERIOCHROME CYANINE R METHO
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AMMONIA-NITROGEN - LOW RANGE SALICY
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PROCEDURE - SALT WATER 1. Press and
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AMMONIA-NITROGEN - HIGH RANGE NESSL
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BENZOTRIAZOLE/TOLYLTRIAZOLE UV Phot
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BENZOTRIAZOLE PROCEDURE 1. Press an
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BIGUANIDE COLORIMETRIC METHOD CODE
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BORON AZOMETHINE-H METHOD CODE 486
Page 25 and 26: BROMINE - UDV DPD METHOD-UNIT DOSE
Page 27 and 28: PROCEDURE Use 10 mm square cell ada
Page 29 and 30: CADMIUM PAN METHOD CODE 4017 QUANTI
Page 31 and 32: CALCIUM & MAGNESIUM (TOTAL) HARDNES
Page 33 and 34: CHLORIDE ARGENTOMETRIC METHOD CODE
Page 35 and 36: CHLORINE LIQUID DPD METHOD CODE 48
Page 37 and 38: PROCEDURE-FREE CHLORINE 1. Press an
Page 39 and 40: CHLORINE-BROMINE-IODINE DPD METHOD
Page 41 and 42: PROCEDURE-FREE CHLORINE 1. Press an
Page 43 and 44: PROCEDURE A: BROMINE (NO CHLORINE)
Page 45 and 46: IODINE Like chlorine and bromine, i
Page 47 and 48: CHLORINE, FREE - UDV DPD METHOD-UNI
Page 51 and 52: CHLORINE, TOTAL - UDV DPD METHOD-UN
Page 55 and 56: CHLORINE DIOXIDE DPD METHOD CODE 36
Page 57 and 58: CHROMIUM DIPHENYLCARBOHYDRAZIDE MET
Page 59 and 60: CHROMIUM-HEXAVALENT DIPHENYLCARBOHY
Page 61 and 62: COBALT PAN METHOD CODE 4851 QUANTI
Page 63 and 64: COD-LOW RANGE MERCURY FREE DIGESTIO
Page 65 and 66: PROCEDURE Use COD adapter (see p. 2
Page 67 and 68: CHROMIUM-HEXAVALENT, TRIVALENT & TO
Page 69 and 70: TOTAL CHROMIUM WITH ACID DIGESTION
Page 71 and 72: COD-STANDARD RANGE MERCURY FREE DIG
Page 73 and 74: PROCEDURE Use COD adapter (see p. 2
Page 75: COD-HIGH RANGE MERCURY FREE DIGESTI
Page 79 and 80: COLOR PLATINUM COBALT METHOD NO RE
Page 81 and 82: COPPER-LOW RANGE BICINCHONINIC ACID
Page 83 and 84: COPPER CUPRIZONE METHOD CODE 4023 Q
Page 85 and 86: COPPER DIETHYLDITHIOCARBAMATE METHO
Page 87 and 88: COPPER-UDV BICINCHONINIC ACID METHO
Page 91 and 92: CYANIDE PYRIDINE-BARBITURIC ACID ME
Page 93 and 94: CYANURIC ACID MELAMINE METHOD-TURBI
Page 95 and 96: CYANURIC ACID-UDV MELAMINE METHOD-T
Page 97 and 98: DISSOLVED OXYGEN WINKLER COLORIMETR
Page 99 and 100: PROCEDURE 1. Press and hold ON butt
Page 101 and 102: FLUORIDE SPADNS METHOD CODE 3647-01
Page 103 and 104: PROCEDURE 1. Press and hold ON butt
Page 105 and 106: HYDRAZINE p-DIMETHYLAMINOBENZALDEHY
Page 107 and 108: HYDROGEN PEROXIDE-LOW RANGE DPD MET
Page 109 and 110: HYDROGEN PEROXIDE- HIGH RANGE DPD M
Page 111 and 112: HYDROGEN PEROXIDE-SHOCK DPD Method
Page 113 and 114: IRON I,I0-PHENANTHROLINE METHOD COD
Page 115 and 116: IRON BIPYRIDYL METHOD CODE 3648-SC
Page 117 and 118: IRON-UDV BIPYRIDYL METHOD-UNIT DOSE
Page 121 and 122: LEAD PAR METHOD CODE 4031 QUANTITY
Page 123 and 124: MANGANESE-LOW RANGE PAN METHOD CODE
Page 125 and 126: MANGANESE-HIGH RANGE PERIODATE METH
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MERCURY TMK METHOD CODE 4861 QUANT
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MOLYBDENUM-HIGH RANGE THIOGLYCOLATE
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NICKEL DIMETHYLGLYOXIME METHOD CODE
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NITRATE ZINC REDUCTION CODE 3689-S
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NITRATE-NITROGEN-LOW RANGE CADMIUM
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PROCEDURE NOTE: Place Dispenser Ca
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NITRITE DIAZOTIZATION CODE 3694-SC
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NITRITE-NITROGEN-LOW RANGE DIAZOTIZ
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NITROGEN, TOTAL CHROMOTROPIC ACID W
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PROCEDURE Use COD adapter. 1. Prehe
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OXYGEN SCAVENGERS DEHA (Diethylhydr
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CARBOHYDRAZIDE PROCEDURE 1. Press a
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HYDROQUINONE PROCEDURE 1. Press and
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OZONE INDIGO METHOD CODE 365I-SC QU
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PROCEDURE-HIGH RANGE A. PREPARATION
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pH COLORIMETRIC METHOD CODE 3700-SC
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PROCEDURE 1. Use Indicator, Range,
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PHENOL AMINOANTIPYRINE METHOD CODE
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PHOSPHATE-LOW RANGE ASCORBIC ACID R
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PROCEDURE 1. Press and hold ON butt
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PHOSPHATE-HIGH RANGE VANADOMOLYBDOP
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PHOSPHORUS, TOTAL-LOW RANGE ASCORBI
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PHOSPHORUS, TOTAL-HIGH RANGE MOLYBD
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POTASSIUM TETRAPHENYLBORON METHOD C
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SILICA-LOW RANGE HETEROPOLY BLUE ME
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PROCEDURE 1. Press and hold ON butt
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SILICA-HIGH RANGE SILICOMOLYBDATE M
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SULFATE-HIGH RANGE BARIUM CHLORIDE
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SULFIDE-LOW RANGE METHYLENE BLUE ME
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SURFACTANTS ION PAIR EXTRACTION-BRO
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TANNIN TUNGSTO-MOLYBDOPHOSPHORIC AC
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TURBIDITY ABSORPTION METHOD NO REAG
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ZINC-LOW RANGE ZINCON METHOD CODE 3
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PROCEDURE A. PREPARATION OF DILUTE
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Smart2 TEST PROCEDURES 2.04 SMART 2
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APPENDIX Ammonia in water occurs in
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TEST INSTRUCTIONS - Geotech Environmental Equipment

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