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4. Conclusion
In order to be able to compare measurement results, metrological traceability must be guaranteed. Five steps are necessary to ensure this: definition of the measurand, identification of factors with a significant influence on the measurand value, modeling of the measurement, choice and application of references for each previously identified influencing factor, assessment of the uncertainty of measurement. In chemistry, this metrological traceability faces two major problems: on the one hand, the multiplicity of measured parameters makes it impossible to have as many recognized references, and on the other, the lack of knowledge of some of the phenomena involved. To remedy these difficulties, which can lead to breaks in the traceability chain, laboratories have developed tools such as certified reference materials, and have used the concept of measurand, the definition of which includes...
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Conclusion
Glossary
Bibliography
Bibliography
Standards
- Reference materials – Establishment and expression of metrological traceability of assigned values to reference materials - ISO/TR16476 - 2016
- Reference materials – Selected terms and definitions - ISO Guide 30 - 2015
- Reference materials – Contents of certificates, labels and accompanying documentation - ISO Guide 31 - 2015
- Reference materials – Good practice in the use of reference materials - ISO Guide...
Organizations
BAM Bundesanstalt für Materialforschung und prüfung https://www.bam.de
BIPM Bureau International des Poids et Mesures (international metrology organization) http://www.bipm.org
Databases
COMAR (reference materials database) http://www.comar.bam.de
EPTIS European Proficiency Testing Information System http://www.eptis.bam.de
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