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| Position: Chinese Standard in English/GB 7731.3-1987 |
| GB 7731.3-1987 Methods for chemical analysis of ferrotungsten-The bis (cyclohexanone) oxalyldihydrazone photometric method for the determination of copper content (English Version) | |||
| Standard No.: | GB 7731.3-1987 | Status: | valid remind me the status change |
| Language: | English | File Format: | |
| Word Count: | 1000 words | Price(USD): | 30.00 remind me the price change |
| Implemented on: | 1988-3-1 | Delivery: | via email in 1~3 business day |
| Standard No.: | GB 7731.3-1987 |
| English Name: | Methods for chemical analysis of ferrotungsten-The bis (cyclohexanone) oxalyldihydrazone photometric method for the determination of copper content |
| Chinese Name: | 钨铁化学分析方法 双环己酮草酰二腙光度法测定铜量 |
| Chinese Classification: | H11 Steel and iron alloy analysis method |
| Professional Classification: | GB National Standard |
| Issued by: | MOMI |
| Issued on: | 1987-03-31 |
| Implemented on: | 1988-3-1 |
| Status: | valid |
| Superseded by: | GB/T 7731.3-2008 Ferrotungsten - Determination of copper content - Bis(cyclohexanone)oxalyldihydrazone photometric method and flame atomic absorption spectrometric method |
| Superseding: | YB 583-1965 |
| Language: | English |
| File Format: | |
| Word Count: | 1000 words |
| Price(USD): | 30.00 |
| Delivery: | via email in 1~3 business day |