China 'GB/T 12690.6-2017
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 12690.6-2017
Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides—Part 6: Determination of iron content—Kslium thiocyanate, 1,10-Phenanthroline spectrophotometric method 稀土金属及其氧化物中非稀土杂质化学分析方法 第6部分：铁量的测定 硫氰酸钾、1,10-二氮杂菲分光光度法
Issued Date:2017-10-14
Implemented Date:2018-05-01
Issued by:
The Standardization Administration of the People's Republic of China
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