Chemical Oxygen Demand (COD) Analysis

The Chemical Oxygen Demand (COD) of water is determined by dichromate method after digestion.

VWR offers 2 solutions to measure COD:

  • Rapid method
  • Official method
COD Rapid Method, Hach

COD Rapid Method, Hach

Complete systems for COD analysis, high range of prepared COD reagents (no dilution of the sample is needed), a reactor and spectrophotometers.

COD Official Method

COD Official Method

The sample is firstly mineralised in a manual or automatic digestion unit with adequate reagents.