1 Ranges 3 to 150 mg/L COD and 20 to 1500 mg/L COD are USEPA approved for vial. 2. Oxygen Demand, Chemical, Dichromate Method (multi-range: 40.0, 150, ...
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A COD test typically involves digestion of a water sample in a sealed vial with potassium dichromate and sulfuric acid at 150oC for 2 hours. Why test for COD?
Recommended COD test for wastewater effluent. The Chemical Oxygen Demand analysis provides important information for the water treatment process and is
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Zero the instrument using the blank vial. Read the samples. Which method is best for me? While both methods are EPA-approved, they have their own advantages and
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The dichromate ion (Cr2O72-) has proven itself to be best suited for general purpose COD and is required in all approved methods. Approved Methods. There are
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Chemical oxygen demand (COD) is defined as the amount of a specified oxidant that reacts with the sample Approved by Standard Methods Committee, 1997.
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