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Chinese National Standard Category: Precious metals and its alloy analysis method |
English Title: | Methods for chemical analysis of tantalum and niobium-Determination of iron content |
Chinese Title: | 钽铌化学分析方法 铁量的测定 |
Standard No.: | GB/T 15076.4-1994 |
Category No.: | H15 |
Issued by: | State Technical Supervision Bureau |
Issued on: | 1994-05-09 |
Implemented on: | 1994-1-2 |
Status: | superseded |
Superseded by: | GB/T 15076.4-2020 Methods for chemical analysis of tantalum and niobium—Part 4:Determination of iron content—1,10-Phenanthroline spectrophotometry |
Superseded on: | 2021-2-1 |
Abolished on: | |
Superseding: | YB 9421-1978 |
Word Count: | 1500 words |
Similar Standards: | GB/T 1490-1979 GB/T 42516-2023 GB/T 11066.11-2021 GB/T 23514-2020 GB/T 39285-2020 GB/T 39292-2020 GB/T 39138.2-2020 GB/T 39143-2020 GB/T 39138.1-2020 GB/T 39138.3-2020 GB/T 34609.2-2020 GB/T 38744-2020 GB/T 23524-2019 GB/T 36592-2018 GB/T 36590-2018 GB/T 36593-2018 GB/T 34609.1-2017 GB/T 34499.2-2017 GB/T 34499.1-2017 YS/T 1119-2016 |
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