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NA 027

DIN Standards Committee Optics and Precision Mechanics

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Project

Jewellery and precious metals - Non-destructive precious metal fineness confirmation by ED-XRF (ISO 23345:2021); German and English version prEN ISO 23345:2025

Abstract

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.

Begin

2025-09-01

WI

00410018

Planned document number

DIN EN ISO 23345

Project number

02703498

Responsible national committee

NA 027-04-04 AA - Methods of analysis for determination of fineness of precious metals  

Responsible european committee

CEN/TC 410 - Jewellery and precious metals  

Responsible international committee

ISO/TC 174/WG 1 - Methods for determining fineness  

draft standard

Jewellery and precious metals - Non-destructive precious metal fineness confirmation by ED-XRF (ISO 23345:2021); German and English version prEN ISO 23345:2025
2025-11
Order from DIN Media

Contact

Dipl.-Ing. (FH)

Petra Bischoff

Alexander-Wellendorff-Str. 2
75172 Pforzheim

Tel.: +49 7231 9188-31
Fax: +49 7231 9188-33

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