Estimating the uncertainty of stability for matrix CRMs View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2001-06

AUTHORS

Thomas P. J. Linsinger, J. Pauwels, Andrée Lamberty, H.G. Schimmel, Adriaan M. H. van der Veen, Lothar Siekmann

ABSTRACT

The new version of ISO Guide 34 requires producers of certified reference materials (CRMs) to include contributions of possible instability to the overall CRM uncertainty, to obtain a value for the uncertainty in compliance with the Guide to the Expression of the Uncertainty in Measurement (GUM). A pragmatic approach to estimating the uncertainty of stability is presented. It relies on regression analysis of stability data with subsequent testing of the slope of the regression line for significance. If the slope is found to be statistically insignificant, a shelf life is chosen and the uncertainty connected with this time is estimated via the standard deviation of the slope. This uncertainty is included in the overall uncertainty of the CRM. This approach is explained with examples showing its applicability to matrix CRMs. More... »

PAGES

183-188

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s002160100719

DOI

http://dx.doi.org/10.1007/s002160100719

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1036062414

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/11451233


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