DIN EN ISO 11489:1995
铂装饰合金中铂含量的测定.用汞氯化物还原的重力测定方法 (ISO 11489:1995); 德文版本 EN ISO 11489:1995
Determination of platinum in platinum jewellery alloys - Gravimetric method after reduction with mercury(I) chloride (ISO 11489:1995); German version EN ISO 11489:1995