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International Standard Category: Other non-ferrous metals and their alloys |
Category No.: | 77.120.99 | Valid Status: | superseded |
Issued Organization: | AQSIQ; SAC | Issued Date: | 2009-10-30 |
Implemented Date: | 2010-6-1 | Abolished Date: | |
Superseded Standard.: | GB/T 6150.8-1985 Methods for chemical analysis of tungsten concentrates; The gravimetric method for the determination hygroscopic moisture content GB/T 6150.8-2023 Methods for chemical analysis of tungsten concentrates―Part 8:Determination of molybdenum content―Thiocyante spectrophotometry method |
Superseded Date: | 1986-6-1 |
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