This standard specifies methods for measuring the chemical oxygen consumption of water, COD. Applicable to water with COD value between 30 and 700 mg/l. The chloride content must not exceed 1 000 mg/l. The sample. If these conditions are met, direct analysis will be performed. Dilute the sample if the COD value exceeds 700 mg/l. The most accurate value is when the COD value of the sample is in the range 300-600 mg/l.
JIS K 0400-20-10:1999 history
1999JIS K 0400-20-10:1999 Water quality -- Determination of the chemical oxygen demand