ISO 6060:1989

Water quality — Determination of the chemical oxygen demand

Method specified is applicable to water with a value between 30 mg/l and 700 mg/l. The chloride contents must not exceed 1 000 mg/l. If the value exceeds 700 mg/l, the water sample is diluted. For greatest accuracy it is preferable that the value of the sample is in the range of 300 mg/l to 600 mg/l.