ISO 33408:2025

Guidance for the production of pure inorganic substance certified reference materials

Publication date: Oct 24, 2025

General information

Current stage: 60.60 Effective date: Oct 24, 2025

Originator: ISO

Owner: ISO/TC 334

Type: International Standard

ICS: 77.020

Languages: English

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Status: Published

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Scope

This document gives specific technical guidance for the production of pure metals or their corresponding crystalline salt certified reference materials (CRMs) in accordance with the general requirements of ISO 17034.
This document is only applicable to solid pure metal and crystalline salt CRMs, including candidate materials, unless otherwise noted.

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PUBLISHED
ISO 33408:2025
60.60 Standard published
Oct 24, 2025