China 'GB/T 223.18-1994
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 223.18-1994
Methods for chemical analysis of iron,steel and alloy--The sodium thiosulfate separation iodimetric method for the determination of copper content 钢铁及合金化学分析方法 硫代硫酸钠分离-碘量法测定铜量
Issued Date:1994-01-17
Implemented Date:1994-10-01
Issued by:
The Standardization Administration of the People's Republic of China