GB/T 19720-2005
China national
standard english version:
GB
中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 19720-2005
Platinum jewellery alloys-Determination of platinum and palladium-Gravimetric method after precipitation of diammonium hexachloroplatinate and dimethylglyoxime 铂合金首饰 铂、钯含量的测定 氯铂酸铵重量法 丁二酮肟重量法
Issued Date:2005-03-23
Implemented Date:2005-09-01
Issued by:
The Standardization Administration of the People's Republic of China