DIN EN ISO 11426-1999 金和金珠宝合金的测定.火吹法(火试验法)

标准号：DIN EN ISO 11426-1999
中文标准名称：金和金珠宝合金的测定.火吹法(火试验法)
英文标准名称：Determination of gold in gold jewellery alloys - Cupellation method (fire assay) (ISO 11426:1997); German version EN ISO 11426:1998
标准类型：H68
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：H68
国际标准分类号：39.060
适用范围：The document specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. Preferably the gold content of the alloys lies between 333 and 999 parts per thousand gold. The procedure applies specifically to gold alloys incorporating silver, copper and zinc. Some modifications are indicated where nickel and/or palladium are present in the socalled white gold alloys, as well for alloys containing 990 or more parts per thousand of gold.