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