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Standard
ISO 33403
First edition
Reference materials —
2024-06
Requirements and
recommendations for use
Matériaux de référence — Exigences et recommandations pour
l'utilisation
Reference number
ISO 33403:2024(en) © ISO 2024
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ISO 33403:2024(en)
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© ISO 2024
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 33403:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Conventions . 2
6 RMs and their role in measurement . 3
6.1 Common applications of RMs .3
6.2 Property values . .5
6.2.1 General .5
6.2.2 Specification of the property .5
6.3 Uncertainty statement . .6
6.4 Traceability statement .7
7 Handling of RMs and CRMs . 8
8 Assessment of precision . 8
8.1 General .8
8.2 Number of replicate measurements .
...