DIN EN ISO 11494:2019-12 Jewellery and precious metals - Determination of platinum in platinum alloys - ICP-OES method using an internal standard element (ISO 11494:2019); German version EN ISO 11494:2019
2019DIN EN ISO 11494:2019-12 Jewellery and precious metals - Determination of platinum in platinum alloys - ICP-OES method using an internal standard element (ISO 11494:2019); German version EN ISO 11494:2019
2019DIN EN ISO 11494:2019 Jewellery and precious metals - Determination of platinum in platinum alloys - ICP-OES method using an internal standard element (ISO 11494:2019)
2016DIN EN ISO 11494:2016 Jewellery - Determination of platinum in platinum jewellery alloys - ICP-OES method using yttrium as internal standard element (ISO 11494:2014); German version EN ISO 11494:2016