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International Standard Category: Cadmium, cobalt and their alloys |
Category No.: | 77.120.70 | Valid Status: | superseded |
Issued Organization: | Issued Date: | 1990-12-30 | |
Implemented Date: | 1992-1-1 | Abolished Date: | 2004-06-01 |
Superseded Standard.: | GB/T 12690.12-2003 Neodymium and samarium-Determination of oxygen content-Impulse-infrared absorption method |
Superseded Date: | 2004-6-1 |
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