【国外标准】 Standard Test Method for Determination of Copper in Unalloyed Copper by Gravimetry (Withdrawn 2022)

5.1 This test method for the chemical analysis of copper is primarily intended to test for compliance with compositional specifications. It is assumed that all who use this method will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory.1.1 This test method covers the chemical analysis of copper having minimum purity of 99.75 % to 99.95 %.1.2 This test method covers the electrolytic determination of copper in chemical, electrolytic, and fire refined copper. In this method silver is deposited with the copper, and is reported as copper.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 8.4 and Section 9.