GB/T 15072.8-2008 Test method of precious metal alloys.Determination of copper content for gold,palladium and silver alloys.Complexometric return titration using thiourea releasing EDTA (English Version)
This part specifies the method for the determination of copper content in gold, palladium and silver alloys. This section applies to the determination of copper content in AuAgCu, AuAgCuGd, AuCuNiZn, AuCuNiZnMn, PdAgCu, PdAgCuAuPtZn, AgCu, AgCuV, AgCuNiAl alloys. Measuring range (mass fraction): 4% to 35%.
GB/T 15072.8-2008 Referenced Document
YS/T 371 Methods for chemical analysis of precious metals alloys. General rules and regulations
GB/T 15072.8-2008 history
2008GB/T 15072.8-2008 Test method of precious metal alloys.Determination of copper content for gold,palladium and silver alloys.Complexometric return titration using thiourea releasing EDTA
1994GB/T 15072.8-1994 Gold,Palladium and silver alloys-Determination of copper content