Infoteenus
39 TÄPPISMEHAANIKA. JUVEELITOOTED
Uued standardid
ISO 18214:2024
Jewellery and precious metals — Determination of high purity gold, silver, platinum and palladium — Difference method using SPARK-OES
Käsitlusala:
This document specifies an analytical procedure for the determination of gold, silver, platinum and palladium with a nominal content of and above 999 ‰ (parts per thousand, by mass), using an optical emission spectrometer with excitation by spark discharge (SPARK-OES).
Alusdokumendid: