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 China 'GB/T 39138.1-2020 ' standard english version:

　

NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 39138.1-2020

Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 1：Determination of gold content—Potentiometric titration using ferrous sulfate
金镍铬铁硅硼合金化学分析方法 第1部分：金含量的测定 硫酸亚铁电位滴定法
Issued Date:2020-10-11 　 Implemented Date:2021-09-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 39138.1-2020
Standard Category China National Standards
GB Standard English Title Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 1：Determination of gold content—Potentiometric titration using ferrous sulfate
GB Standard Chinese Title 金镍铬铁硅硼合金化学分析方法 第1部分：金含量的测定 硫酸亚铁电位滴定法
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