90.93 Standard confirmed Sep 3, 2026
ISO
ISO/TC 174 Jewellery and precious metals
International Standard
Published
This document describes a non-destructive method to verify (confirm) the precious metal fineness of finished and semifinished jewellery item(s) considered homogeneous by ED-XRF (energy dispersive X-ray fluorescence), including alloys according to ISO 9202.
This document is not suitable for any coated items. WD-XRF (wavelength dispersive X-ray fluorescence) equipment cannot be used.
PUBLISHED
ISO 23345:2021
90.93
Standard confirmed
Sep 3, 2026