International Organization for Standardization (ISO)
Latest
ISO 11494:2019
Scope
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.
ISO 11494:2019 history
2019ISO 11494:2019 Jewellery and precious metals — Determination of platinum in platinum alloys — ICP-OES method using an internal standard element
2014ISO 11494:2014 Jewellery - Determination of platinum in platinum jewellery alloys - ICP-OES method using yttrium as internal standard element
2008ISO 11494:2008 Jewellery - Determination of platinum in platinum jewellery alloys - Inductively coupled plasma (ICP) solution-spectrometric method using yttrium as internal standard element