Applicable to most kinds of water having a COD value between 30 and 700 mg/l before dilution. It is not applicable to saline waters containing (after dilution) more than 1000 mg/l of chloride, such as sea and oilfield waters.
BS 6068-2.34:1988 history
0000 BS 6068-2.34:1988(2011)
1988BS 6068-2.34:1988 Water quality - Physical, chemical and biochemical methods - Method for the determination of the chemical oxygen demand