BOD / COD Online Analyzer

COD/BOD Online Analyzer BOD (Biochemical Oxygen Demand) means the amount of oxygen (in mg/l) microorganisms like bacteria need to 'eat' the organic pollution (sugars, fat, proteins, ...). COD (Chemical Oxygen Demand) is the amount of oxygen required to degenerate all pollution in a chemical way (by adding oxidizing agents and heating). In general with chemical destruction you can remove more pollution than with the biological way. Both BOD and COD are expressed in mg/l oxygen consumed.