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DIN 38409-44:1992

German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of the chemical oxygen demand (COD), ranging from 5 to 50 mg/l (H 44)

The document describes 2 chemical methods for the determination of the chemical oxygen demand (COD) in water, for a range between 5 and 50 mg/l. There are given 2 variant methods for different chloride concentrations of the water. The examination works with potassium dichromate for oxydation and silversulfate as catalyzer in sulphuric acid solution.

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Deutsches Institut für Normung [din]

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