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 China 'GB/T 21994.7-2008 ' standard english version:

　

NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 21994.7-2008

Chemical analysis of magnesium fluoride - Part 7: Determination of iron content - Orthophenantholine photometric method
氟化镁化学分析方法 第7部分：三氧化二铁含量的测定 邻二氮杂菲分光光度法
Issued Date:2008-06-09 　 Implemented Date:2008-12-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 21994.7-2008
Standard Category China National Standards
GB Standard English Title Chemical analysis of magnesium fluoride - Part 7: Determination of iron content - Orthophenantholine photometric method
GB Standard Chinese Title 氟化镁化学分析方法 第7部分：三氧化二铁含量的测定 邻二氮杂菲分光光度法
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