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Uncertainty Due to Unaccounted Effects in Certification of Chemical Reference Materials
Published
Author(s)
Raghu N. Kacker
Abstract
A widely accepted approach to assure that the certified property of a chemical reference material is independent of the method of analysis is to analyze by two or more judiciously chosen methods. The statistical problem then is to determine the consensus value of the measurand and the uncertainty concerning the measurand. This paper describes a new approach to determine the consensus value and the uncertainty. The proposed approach is based on the Guide to the Expression of Uncertainty in Measurement. This approach is not only better than the earlier approaches but it saves cost and time as well.
chemical measurements, interlaboratory evaluations, reference materials, uncertainty
Citation
Kacker, R.
(2008),
Uncertainty Due to Unaccounted Effects in Certification of Chemical Reference Materials, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD
(Accessed December 11, 2024)