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The EPA does not allow a modification of the reagents used for reporting purposes. You must use all specified reagents in the COD vial.
The caliber is a uniform 16mm, but the sizes are 9ml, 10ml, 12ml and 15ml. and a round bottom, and the 12ml and 15ml COD Test Tubes have a round bottom.
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Hach offers complete systems for chemical oxygen demand (COD) analysis, with prepared COD reagents, a reactor, and spectrophotometers and.
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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.
Hach's USEPA-approved dichromate COD Method is the most widely used chemical oxygen demand (COD) method for NPDES reporting in the world.
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Vials are packaged in 25-, 100- and 150-count boxes to meet your testing frequency. First time buyers, receive a 25% discount on your first order of COD reagent
