This standard specifies the measurement method for arsenic content in copper and copper alloys. This standard applies to the determination of arsenic in copper and copper alloys. Measuring range: 0.0010% to 0.10%.
GB/T 5121.21-1996 history
2008GB/T 5121.21-2008 Methods of chemical analysis of copper and copper alloys - Part 21: Determination of titanium content
1996GB/T 5121.21-1996 Copper and copperr alloys--Determination of titanium content