China 'GB/T 6730.7-1986
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 6730.7-1986
Methods for chemical analysis of iron ores--The sulfosalicylic acid photometric method for the determination of metallic iron content 铁矿石化学分析方法 磺基水杨酸光度法测定金属铁量
Issued Date:1986-08-19
Implemented Date:1987-08-01
Issued by:
The Standardization Administration of the People's Republic of China