 |
Chinese Classification
Professional Classification
ICS Classification
Latest
Value-added Services
|
| Standard Insuued on: 1990-12 |
GB/T 12690.13-1990 Neodymium and samarium-Determination of carbon content-High frequency-Infrared absorption method
稀土金属及其氧化物化学分析方法 高频-红外吸收法测定金属钕、金属钐中碳量
| Category No.: | GB | Valid Status: | superseded |
| Issued Organization: | Issued Date: | 1990-12-30 | |
| Implemented Date: | 1992-1-1 | Abolished Date: | 2003-06-01 |
| Superseded Standard.: | GB/T 12690.3-2002 Chemical analysis methods for non-RE impurity of rare earth metals and their oxides-Determination of water content of rare earth oxides-Gravimetric method GB/T 12690.1-2002 Chemical analysis methods for non-RE impurity of rare earth metals and their oxides-Determination of carbon and sulfur contents-High frequency-infrared absorptoin method |
Superseded Date: | 2003-6-1 |
GB/T 678-1990
GB/T 12600-1990
GB/T 12545.1-2008
GB/T 12529.1-2008
GB/T 12529.3-2008
GB 13022-1991
GB/T 12690.21-1990
GB/T 12689.5-1990
GB/T 12689.3-1990
GB/T 12689.1-1990
GB/T 12690.14-1990
GB/T 12690.13-1990
GB 2367-1990
GB/T 12689.4-1990
GB/T 12690.8-1990
GB/T 12689.8-1990
GB/T 12689.14-1990
GB/T 12761-1991
GB/T 12690.25-1990
GB/T 12689.6-1990
| Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886 |
| Copyright: TransForyou Co., Ltd. 2008-2040 |