標準號：PS 1420-1978
中文標準名稱：99．90% 以上純銅含量測定．電解法
英文標準名稱：SPECIFICATION FOR UNALLOYED COPPER CONTAINING NOT LESS HAN 99.90% OF COPPER DETERMINATION OF COPPER CONTENT—ELECTROLYTIC METHOD.
發布日期：1978/1/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This Pakistan Standard specifics an electrolytic method for the determination of the copper content of unalloyed copper containing not less than 99.90% of copper. Silver, if present, is deposited with the copper and is reported as copper.The method is applicable to coppers free from elements which leave insoluble residues in the solution for electrolysis, and having a low content of impurities which can be deposited electrolytically together with the copper.A spectrophotometric method for the determination of residual copper in the electrolyte after deposition of copper on the cathode is given in Annex. B.