90.20 Standard under periodical review Jan 15, 2025
ISO
ISO/TC 174 Jewellery and precious metals
International Standard
39.060 Jewellery
Published
This document specifies the precious metal content in solders suitable for use in the production of jewellery made of precious metal alloys.
PUBLISHED
ISO 22764:2020
90.20
Standard under periodical review
Jan 15, 2025