China 'GB/T 1819.11-2017
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 1819.11-2017
Methods for chemical analysis of tin concentrates—Part 11:Determination of aluminium oxide content—Chromazuzal S spectrophotometric method 锡精矿化学分析方法 第11部分:三氧化二铝量的测定 铬天青S分光光度法
Issued Date:2017-09-29
Implemented Date:2018-06-01
Issued by:
The Standardization Administration of the People's Republic of China