China 'GB/T 15072.9-2008
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 15072.9-2008
Test method of precious metal alloys - Determination of indium content for gold alloys - Complexometric return titration using EDTA 贵金属合金化学分析方法 金合金中铟量的测定 EDTA络合返滴定法
Issued Date:2008-03-31
Implemented Date:2008-09-01
Issued by:
The Standardization Administration of the People's Republic of China