Hach's USEPA-approved dichromate COD Method is the most widely used chemical oxygen demand (COD) method for NPDES reporting in the world.
Hach offers complete systems for chemical oxygen demand (COD) analysis, with prepared COD reagents, a reactor, and spectrophotometers and.
19 Products China cheap 15mL hach cod vials for sale factory-glass sample ... buy wholesales 15mL hach cod vials for water analysis price High quality COD reagent ...
May 26, 2021 - Screw cap 16mm test vials are used for water analysis, it can also called COD vial. There are 9ml, 10ml, 12ml, 15ml test tubes for water