This standard specifies the method for the determination of nickel content in gold alloys. This standard applies to the determination of nickel in AuNi9, AuNiCu7.5-1.5, AuNiIn9-8, AuNiFeZr5-1.5-0.3 and AuNiFeZr9-2-0.3 alloys. Measuring range: 5% to 10%.
GB/T 15072.10-1994 history
2008GB/T 15072.10-2008 Test method of precious metal alloys.Determination of nickel content for gold alloys.Complexometric backing titration using EDTA