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Technische Regel

ISO Guide 35:2017

Issue date: 2017 08 21

Reference materials — Guidance for characterization and assessment of homogeneity and stability

ISO/Guide 35:2017 explains concepts and provides approaches to the following aspects of the production of reference materials: - the assessment of homogeneity; - ...
Withdrawn: 2024 05 03
Publisher:
International Organization for Standardization
Format:
Digital | 105 Pages
Language:
English
Currently valid:

ISO/Guide 35:2017 explains concepts and provides approaches to the following aspects of the production of reference materials:

- the assessment of homogeneity;

- the assessment of stability and the management of the risks associated with possible stability issues related to the properties of interest;

- the characterization and value assignment of properties of a reference material;

- the evaluation of uncertainty for certified values;

- the establishment of the metrological traceability of certified property values.

The guidance given supports the implementation of ISO 17034. Other approaches may also be used as long as the requirements of ISO 17034 are fulfilled.

Brief guidance on the need for commutability assessment (6.11) is given in this document, but no technical details are provided. A brief introduction for the characterization of qualitative properties (9.6 to 9.10) is provided together with brief guidance on sampling such materials for homogeneity tests (Clause 7). However, statistical methods for the assessment of the homogeneity and stability of reference materials for qualitative properties are not covered. This document is also not applicable to multivariate quantities, such as spectral data.

ISO 33405:2024
2024 05 03
Reference materials — Approaches for characterization and assessment of homogeneity and stability
Norm
ISO Guide 35:2017
2017 08 21
Reference materials — Guidance for characterization and assessment of homogeneity and stability
Technische Regel
ISO Guide 35:2006
2006 01 26
Reference materials — General and statistical principles for certification
Technische Regel
ISO Guide 35:1989
1989 05 01
Certification of reference materials — General and statistical principles
Technische Regel
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Norm
ISO 33405:2024
Issue date : 2024 05 03
Reference materials — Approaches for characterization and assessment of homogeneity and stability