This standard specifies the method for the determination of zinc content in copper and copper alloys. This standard applies to the determination of zinc content in copper and copper alloys. Measuring range: 0.0020% to 2.00%.
GB/T 5121.3-1996 history
2008GB/T 5121.3-2008 Methods for chemical analysis of copper and copper alloys.Part 3:Determination of lead content
1996GB/T 5121.3-1996 Copper and copper alloys--Determination of lead content
1985GB/T 5122.2-1985 Methods for chemical analysis of brass--The electrolytic separation--EDTA titrimetric method for the determination of lead content