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| International Standard Category: Cadmium, cobalt and their alloys |
YS/T 520.1-2007 Chemical analysis of gallium Part 1 Determination of copper content The 2 9-dimethyl-4 7-diphenyl-1 10-phenanthroline spectrophotometric method
镓化学分析方法 第1部分 铜含量的测定 2，9-二甲基-4，7-二苯基-1，10-二氮杂菲分光光度法;
| Category No.: | 77.120.70 | Valid Status: | valid |
| Issued Organization: | NDRC | Issued Date: | 2007-11-14 |
| Implemented Date: | 2008-5-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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