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Hach's USEPA-approved dichromate COD Method is the most widely used chemical oxygen demand (COD) method for NPDES reporting in the world.

COD Digestion Reagent vials varies. DRB200 Reactor. 1. Light shield or adapter (For information about sample cells, adapters or light shields, refer to.

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Hach's USEPA-approved dichromate COD Method is the most widely used chemical oxygen demand (COD) method for NPDES reporting in the world.

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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Hach's USEPA-approved dichromate COD Method is the most widely used chemical oxygen demand (COD) method for NPDES reporting in the world.

Hach's COD Digestion Vials (High Range) are used for determination of high range Chemical Oxygen Demand (COD) by the Reactor Digestion method.