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 DRB200: Digital Reactor Block: 15 x 16 mm vial wells, 115 VAC.
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COD Digestion Vials, Low Range Method: Reactor Digestion Chemical Oxygen Demand (COD): US EPA approved for wastewater analysis using Hach Method 8000 Range:
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