China 'GB/T 6150.4-2023
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 6150.4-2023
Chemical analysis methods for tungsten concentrates Part 4: Determination of sulfur content High-frequency induction infrared absorption method and combustion-iodometric method 钨精矿化学分析方法 第4部分:硫含量的测定 高频感应红外吸收法和燃烧-碘量法
Issued Date:2023/8/6
Implemented Date:2024/3/1
Issued by:
The Standardization Administration of the People's Republic of China