ISO 23345:2021 PDF

Jewellery and precious metals — Non destructive precious metal fineness confirmation by ED-XRF

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Title (English):

ISO 23345:2021

Jewellery and precious metals — Non destructive precious metal fineness confirmation by ED-XRF

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: June 17, 2021
Edition:: ISO IS 23345 edition 1 version 1
ICS:: 19.100

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Description (English):

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.

Technical details

Technical committee: ISO/TC 174 - Jewellery and precious metals
SKU: ISO 23345:2021

Abstract

Overview

ISO 23345:2021 defines a non‑destructive method for confirming the precious metal fineness of finished and semi‑finished jewellery using ED‑XRF (energy‑dispersive X‑ray fluorescence). The standard covers homogeneous items and alloys (including those referenced by ISO 9202). It excludes coated items (coatings must be removed) and explicitly states that WD‑XRF (wavelength‑dispersive XRF) cannot be used. The method provides a practical alternative to destructive assays (for example, cupellation) when preservation of the item is required.

Key Topics and Technical Requirements

Principle: Specific method calibration for each alloy composition using ED‑XRF and verification with a reference material.
Instrumentation: ED‑XRF equipment adapted for precious metals (example requirements in the standard include X‑ray tube ≥50 kV / 40 W, appropriate primary filters, multiple collimators including one

Related standards

Mentioned in the description and other ISO standards

Overview

Key Topics and Technical Requirements

Principle: Specific method calibration for each alloy composition using ED‑XRF and verification with a reference material.
Instrumentation: ED‑XRF equipment adapted for precious metals (example requirements in the standard include X‑ray tube ≥50 kV / 40 W, appropriate primary filters, multiple collimators including one

ISO 23345:2021 PDF

Technical details

Abstract

Overview

Key Topics and Technical Requirements

Related standards

Abstract

Overview

Key Topics and Technical Requirements

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