
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
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
This document describes an analytical procedure for the determination of platinum in platinum alloys with a nominal content up to 990 ‰ (parts per thousand), including alloys according to ISO 9202
EN ISO 11494 : 2016 - Identical