Tag: demand

Chemical Oxygen Demand (COD)

In environmental chemistry, chemical oxygen demand (COD) tests the measurement of oxygen that is consumed during the test by particular organic compound. In other words the COD test is used to measure the amount organic matter present in…

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Biological Oxygen Demand (BOD)

Biological oxygen demand (BOD) also biochemical oxygen demand is a measure of dissolved oxygen required by anaerobic organism in oxidation of organic matter in a given water sample. It is an indicator of the putrescible organic matter available…

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