This International Standard specifies a volumetric method for the determination of silver in silver jewel-lery alloys, preferably within the range of fineness stated in ISO 9202. These alloys may contain copper, zinc, cadmium and palladium. Apart from palladium, which must be pre-cipitated before commencing titration, these el-ements do not interfere with this method of determination. NOTE 1 This method is intended to be used as the ref-eree method for the determination of fineness in the alloys covered by ISO 9202.
DS/EN 31427-1994由丹麦标准化协会 DK-DS 发布于 1994-07-11,并于 1994-07-11 实施。
DS/EN 31427-1994在国际标准分类中归属于: 39.060 珠宝。
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