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Standard Insuued on: 1982-12 |
Category No.: | GB | Valid Status: | superseded |
Issued Organization: | chinania | Issued Date: | 1982-12-31 |
Implemented Date: | 1983-12-31 | Abolished Date: | |
Superseded Standard.: | YS/T 509.12-2006 Methods for chemical analysis of sqodumenite and lepidolite concentrates The gravimetric method for the determination of loss on ignition |
Superseded Date: | 2006-10-11 |
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