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BSI 23/30469465 DC 2023

BSI 23/30469465 DC 2023

$13.70

BS ISO 33407. Guidance for the production of pure organic substance certified reference materials

Published By Publication Date Number of Pages
BSI 2023 49
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PDF Catalog

PDF Pages PDF Title
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Technical and production requirements
4.1 General
4.2 Production planning
4.3 Specification of the CRM and its measurand
4.3.1 General
4.3.2 Specification of purpose
11 4.3.3 Specification of the measurand
4.3.4 Definition of the metrological reference
4.3.5 Fitness for purpose
4.3.6 Safety considerations
4.3.7 Resources and approaches to purity analysis
12 4.4 Candidate material sourcing and assessment of suitability including verification of PC identity and adequate purity
4.4.1 Material sourcing
13 4.4.2 Verification of PC identity
4.4.3 Material suitability
14 4.5 Product packaging and specification of conditions for storage and safe handling
4.5.1 General considerations
4.5.2 Selection and treatment of packaging materials
15 4.5.3 Storage and transportation issues
4.5.4 Label of containers
4.6 Approaches to purity assessment of the CRM
16 4.7 Development and validation of procedures for characterisation including achieving target measurement uncertainty
4.7.1 General
4.7.2 Multiple methods for purity determination
17 4.7.3 Property value boundaries
4.8 Assessment of homogeneity
4.8.1 General
4.8.2 Preliminary assessment of homogeneity
18 4.8.3 Sampling strategy
4.8.4 Minimum sample size
4.8.5 Experimental method of homogeneity assessment
4.9 Assessment of stability
4.9.1 General
4.9.2 Sources of Instability
19 4.9.3 Repeated use stability
4.9.4 Stability monitoring
4.10 Characterisation of the reference material
4.10.1 General
4.10.2 Direct determination
20 4.10.3 Indirect determination
4.10.4 Characterisation for use in multi-component solutions
4.11 metrological traceability of the certified property value
4.12 Preparation of certificates
22 Annex€A (informative) Examples of structure identification approaches
24 Annex€B (informative) Examples of measurement procedures for assessment of purity
28 Annex€C (informative) Examples of production of pure substance organic certified reference materials by reference material producers
47 Bibliography

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BSI 23/30469465 DC 2023
$13.70