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- DictionaryBi·o·log·i·cal ox·y·gen de·mand
noun
- 1. another term for biochemical oxygen demand
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noun
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Biochemical oxygen demand is an analytical parameter representing the amount of dissolved oxygen consumed by aerobic bacteria growing on the organic material present in a water sample at a specific temperature over a specific time period. The BOD value is most commonly expressed in milligrams of oxygen consumed per liter of sample during 5 days of incubation at 20 °C and is often used as a surroga... Wikipedia