China 'GB/T 12690.18-2017
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 12690.18-2017
Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides— Part 18: Determination of zirconium content 稀土金属及其氧化物中非稀土杂质化学分析方法 第18部分:锆量的测定
Issued Date:2017-10-14
Implemented Date:2018-05-01
Issued by:
The Standardization Administration of the People's Republic of China