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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.

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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.

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

May 26, 2021 - Screw cap 16mm test vials are used for water analysis, it can also called COD vial. You can get this COD test tube in wholesale price.

The HACH 21259-25 COD Digestion Vials, High Range are designed for the Get wholesale price ... Year Company Registered, 2005, Export Percentage, 0% ...

China customized 10mL cod digestion vials for water analysis exporter. 22-03-22 cheap wholesales 16mm hach cod vials manufacturer. 22-03-22.

Amazon's Choice ; National Stock Number ‏ · ‎ ; Date First Available ‏ · ‎ ; Manufacturer ‏ · ‎ ; Product Description. Chemical Oxygen Demand (COD): US EPA approved