中華人民共和國國家標準
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 6609.4-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of ferric oxide content--Orthophenanthroline photometric method 氧化鋁化學分析方法和物理性能測定方法 鄰二氮雜菲光度法測定三氧化二鐵含量
Issued Date:2004-02-05
Implemented Date:2004-07-01
Issued by:
The Standardization Administration of the People's Republic of China