Hach's USEPA-approved dichromate COD Method is the most widely used chemical oxygen demand (COD) method for NPDES reporting in the world.
For determination of high range Chemical Oxygen Demand (COD) by the Reactor Digestion method. US EPA approved for wastewater analysis using Hach Method 8000
Zhejiang Aijiren,Inc. is one of the leading China COD vials manufacturers and suppliers, welcome to wholesale cheap COD vials from us.
They are supplied 25 to a package in 16 mm vials. The COD Reactor can digest up to 25 samples simultaneously in 2 hours or less. The inexpensive AQUAfast II is