China 'GB/T 1819.9-2004
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 1819.9-2004
Methods for chemical analysis of tin concentrates--Determination of tungsten trioxide content--The thiocyanate spectrophotometric method 锡精矿化学分析方法 三氧化钨量的测定 硫氰酸盐分光光度法
Issued Date:2004-02-05
Implemented Date:2004-07-01
Issued by:
The Standardization Administration of the People's Republic of China