China 'GB/T 6609.18-2004
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 6609.18-2004
Chemical analysis methods and determination of physical performanceof alumina--Determination of sulfate content--N,N-dimethyl-P-phenylenediamine spectrophotometric method 氧化铝化学分析方法和物理性能测定方法 N,N-二甲基对苯二胺分光光度法测定硫酸根含量
Issued Date:2004-02-05
Implemented Date:2004-07-01
Issued by:
The Standardization Administration of the People's Republic of China