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ISO 6060:1989
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ISO 6060:1989 Water quality - Determination of the chemical oxygen demand
standard by International Organization for Standardization, 10/01/1989
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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.