Definition: Testing for the amount of biodegradable organic material in a water sample by measuring the quantity of oxygen consumed by biodegradation of those materials over a specific time period.
Other names Oxygen Demand, Chemical; Oxygen Demand, Biological; Demand, Chemical Oxygen; Chemical Oxygen Demand Analysis; Chemical Oxygen Demand Analyses; Chemical Oxygen Demand; Biological Oxygen Demand Analyses; Biological Oxygen Demand