 |
Chinese Classification
Professional Classification
ICS Classification
Latest
Value-added Services
|
| Chinese National Standard Category: Rare metals and their alloys analysis method |
| English Title: | Rare-earth metals and their oxides--Determination of acid soluble silicon oxide--Molybdenum blue spectrophotometric method |
| Chinese Title: | 稀土金属及其氧化物化学分析方法 钼蓝分光光度法测定酸溶硅量 |
| Standard No.: | GB/T 12690.23-1990 |
| Category No.: | H14 |
| Issued by: | |
| Issued on: | 1990-01-02 |
| Implemented on: | 1992-1-1 |
| Status: | superseded |
| Superseded by: | GB/T 12690.7-2003 Neodymium and neodymium oxide-Determination of lanthanum oxide, cerium oxide, praseodymium oxide, s |
| Superseded on: | 2004-6-1 |
| Abolished on: | 2004-06-01 |
| Superseding: | YB 1509-1977 |
| Word Count: | 1500 words |
| Similar Standards: | YS/T 230.1-1994 YS/T 230.3-1994 GB/T 16480.1-1996 YS/T 230.5-1994 GB/T 16480.4-1996 YS/T 230.6-1994 GB/T 18115.7-2000 GB/T 18115.10-2000 YS/T 230.2-1994 GB 11074.2-1989 YS/T 230.7-1994 GB/T 18115.8-2000 GB/T 18116.2-2000 YB 1503-1977 GB/T 18115.2-2000 YS/T 474-2005 GB/T 18115.6-2000 GB/T 18115.5-2000 GB/T 18115.4-2000 YS/T 230.4-1994 |
| Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886 |
| Copyright: Foryou Tech Co., Ltd. 2008-2020 |