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China 'GB/T 12690.21-2024 ' standard english version:

中华人民共和国国家标准
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 12690.21-2024

Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxides-Part 21: Determination of sulfate content in rare earth oxides-Barium sulfate turbidimetry
稀土金属及其氧化物中非稀土杂质化学分析方法-第21部分：稀土氧化物中硫酸根含量的测定-硫酸钡比浊法

Issued Date:2024/10/26

Implemented Date:2025/5/1

Issued by:

The Standardization Administration of the People's Republic of China

English Chinese

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GB Standard Code	GB/T 12690.21-2024
Standard Category	China National Standards
GB Standard English Title	Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxides-Part 21: Determination of sulfate content in rare earth oxides-Barium sulfate turbidimetry
GB Standard Chinese Title	稀土金属及其氧化物中非稀土杂质化学分析方法-第21部分：稀土氧化物中硫酸根含量的测定-硫酸钡比浊法
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