ISO/CD 19919

Jewellery and precious metals — Determination of silver — ICP-OES method using an internal standard element ISO/CD 19919

Scope

This document describes an analytical method for the determination of silver in jewellery alloys with a nominal content of up to 990 ‰ (per mil), including alloys according to DIN EN ISO 9202 using inductively coupled plasma emission spectrometry.
Preferentially the silver content of the alloys lies between 50 ‰ (parts per thousand) and 990 ‰ silver.
NOTE Lower contents of silver can be analyzed with this method.