Home / Standards / GB/T 15072.17-2008 GB/T 15072.17-2008 Active Methods for chemical analysis of precious metal alloys — Determination of tungsten content in platinum alloys — Tungsten trioxide gravimetric method 贵金属合金化学分析方法 铂合金中钨量的测定 三氧化钨重量法 Standard Type GBT ICS 77.120.99 CCS H68 Status 现行 Issue Date 2023-11-02 Implementation 2008-09-01 Responsible Dept N/A Drafting Unit N/A