Biological Oxygen Demand

Biochemical Oxygen Demand (BOD) is used in water monitoring provides as an estimate of the oxygen uptake by microorganisms during the breakdown of organic material present in a water sample. This is normally quoted in mg/L. The value for BOD will always be lower than that of COD.

It is usually measured in the laboratory under controlled conditions over a 5-day period (e.g. BOD5) and oxygen depletion compared to control. The reason for the five days is to give the Biological substance the opportunity to grow to a detectable level.

Bod in waste water and sewage treatment  is an important parameter aswell in lake.

See our BOD products
UV254 Analyzer measuring BOD (Biological Oxygen Demand) beside a lake