Taiwan Provincial Standard of the People's Republic of China
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CNS 8420-1984
Scope
This standard is suitable for the inspection of industrial wastewater containing high cyanide ion concentration, and the quantitative range is CN-1mg/1 or more.
CNS 8420-1984 history
1984CNS 8420-1984 Method of Test for Cyano - Compounds in Industrial Wastewater (Silver Nitrate Method)