中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 20975.4-2008
Methods for chemical analysis of aluminium and aluminium alloys - Part 4:Determination of iron content Orthopenanthroline photometric method 铝及铝合金化学分析方法 第4部分:铁含量的测定 邻二氮杂菲分光光度法
Issued Date:2008-03-31
Implemented Date:2008-09-01
Issued by:
The Standardization Administration of the People's Republic of China