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Biological oxygen demand (BOD) bottles are used to determine the amount of oxygen required during stabilization of decomposing organic matter by aerobic action. The containers are used for incubating diluted samples of sewage, sewage effluents, polluted water, and industrial waste. Made from borosilicate glass, these bottles have a high chemical resistance. BOD bottles come with a permanently screened label and are available with glass stoppers. Models utilizing darker glass are ideal for handling light-sensitive samples.