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Standard Insuued on: 2001-02 |
Category No.: | YS | Valid Status: | superseded |
Issued Organization: | China Non-Ferrous Metals Industry Association | Issued Date: | 2001-02-12 |
Implemented Date: | 2001-5-1 | Abolished Date: | |
Superseded Standard.: | YS/T 438.4-2013 Methods for Physical Performance Determination of Sandy Alumina - Part 4: B.E.T Method for Determination of Specific Surface Area |
Superseded Date: | 2013-9-1 |
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