GB/T 223.19-1989
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 223.19-1989
Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content 钢铁及合金化学分析方法 新亚铜灵-三氯甲烷萃取光度法测定铜量
Issued Date:1989-03-31
Implemented Date:1990-07-01
Issued by:
The Standardization Administration of the People's Republic of China