GB/T 223.42-1985
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 223.42-1985
Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-bromopyrogallol red photometric method for the determination of tantalumcontent 钢铁及合金化学分析方法 离子交换分离-溴邻苯三酚红光度法测定钽量
Issued Date:1985-07-18
Implemented Date:1986-06-01
Issued by:
The Standardization Administration of the People's Republic of China