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    On the validation by inter-laboratory study of ‘procedures’ in chemical measurement

    Thompson, Michael (2016) On the validation by inter-laboratory study of ‘procedures’ in chemical measurement. Analytical Methods 8 (46), pp. 8147-8150. ISSN 1759-9660.

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    This study examines formally the proposition that validation of analytical procedures can be best undertaken by interlaboratory study. It approaches the task by considering the fundamental nature of validation and the meaning of ‘procedure’ in relation to uncertainty. The contention is that (a) only procedures as such can be validated, (b) the results of a procedure are empirical, (c) empirical procedures are unbiased, and (d) the interlaboratory reproducibility standard deviation (SDR) associated with an unbiased procedure is an unbiased estimate of the uncertainty. The definitive interlaboratory study for estimating SDR is the collaborative trial, but the case is made that, with due caution, data from proficiency tests can also provide useful estimates of SDR and thence estimates of uncertainty.


    Item Type: Article
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Natural Sciences
    Depositing User: Administrator
    Date Deposited: 08 Mar 2017 13:10
    Last Modified: 02 Aug 2023 17:30


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