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GB/T 223.37-1989  China national standard english version:

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

GB/T 223.37-1989

Methods for chemical analysis of iron，steel and alloy--The indophenol blue photometric method for the determination of nitrogen content after distillation separation
钢铁及合金化学分析方法 蒸馏分离-靛酚蓝光度法测定氮量
Issued Date:1989-03-31 　 Implemented Date:1990-07-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 223.37-1989
Standard Category China National Standards
GB Standard English Title Methods for chemical analysis of iron，steel and alloy--The indophenol blue photometric method for the determination of nitrogen content after distillation separation
GB Standard Chinese Title 钢铁及合金化学分析方法 蒸馏分离-靛酚蓝光度法测定氮量
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