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— 16 стр.
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— 15 стр.
Jewellery - Determination of platinum in platinum jewellery alloys - ICP-OES method using yttrium as internal standard element (ISO 11494:2014); German and English version prEN ISO 11494:2016— 16 стр.
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— 15 стр.
Jewellery and precious metals - Determination of platinum in platinum alloys - ICP-OES method using an internal standard element (ISO/DIS 11494:2018); German and English version prEN ISO 11494:2018— 15 стр.