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Chemical Oxygen Demand (COD or CODcr) refers to the amount of oxidant consumed caused by oxidation of reducing substances in water under specific condition, recorded as the amount of oxygen consumption counted by “mg/L”. It indicates the water pollution degree by these reducing substances, including organic matter, nitrite, ferrous salt and sulfide, etc. There is a small amount of inorganic reducing substances but a large amount of organic matters. So, COD can be used as a comprehensive index of relative content of organic matters.
COD-1C LABORATORY COD ANALYZER
5~2000mg/L (three ranges: CODL 5~200 mg/L, CODM 200~1000 mg/L and CODH 1000~2000 mg/L),(over range can be diluted)
COD: 5~100 mg/L, Absolute Error (AE)≤±8mg/L,100~2000mg/L；Relative Error (RE)≤±8%
Read the value BOD5 from dividing rule of pressure gauge（mg/L）
Optical Systems (wavelength)
420 nm and 610 nm
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