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| Position: Chinese Standard in English/GB/T 17415.2-1998 |
| GB/T 17415.2-1998 Methods for chemical analysis of Tantalum and Niobium ores-Determination of Niobium content-Preconcentration and separation with silica gel-Thiocyanate extraction photometric method (English Version) | |||
| Standard No.: | GB/T 17415.2-1998 | Status: | superseded |
| Language: | English | File Format: | |
| Word Count: | 1500 words | Price(USD): | 184.00 remind me the price change |
| Implemented on: | 1999-1-1 | Delivery: | via email in 1~3 business day |
| Standard No.: | GB/T 17415.2-1998 |
| English Name: | Methods for chemical analysis of Tantalum and Niobium ores-Determination of Niobium content-Preconcentration and separation with silica gel-Thiocyanate extraction photometric method |
| Chinese Name: | 钽矿石、铌矿石化学分析方法 硅胶富集分离-硫氰酸盐萃取光度法测定铌量 |
| Chinese Classification: | D43 Rare metal ore |
| Professional Classification: | GB National Standard |
| Issued by: | State Qualtiy Technical Supervision Bureau |
| Issued on: | 1998-06-17 |
| Implemented on: | 1999-1-1 |
| Status: | superseded |
| Superseded by: | GB/T 17415.2-2010 Methods for chemical analysis of tantalum and niobium ores—Part 2:Determination of niobium content |
| Superseded on: | 2011-2-1 |
| Abolished on: | 2011-02-01 |
| Language: | English |
| File Format: | |
| Word Count: | 1500 words |
| Price(USD): | 184.00 |
| Delivery: | via email in 1~3 business day |