Authors: P De Bièvre
Publish Date: 2006/04/19
Volume: 11, Issue: 3, Pages: 105-106
Abstract
The usual statement about participation in an interlaboratory comparison ILC seems to be that it only yields a ‘snapshot’ of the performance of a measurement laboratory at a given point in time It is also said that it is a ‘one shot best performance’ produced by using some excellent measuring system operated by an excellent analyst for the very purpose of showing an optimum performance on that occasion Let us discuss the case were a result is submitted which is truly representative for the daily operations of each of twoparticipants in an ILC involving many participants Indeed practical comparisons of measurement results usually occur between two parties in a context buyerseller inspectorinspected regulatorregulated accreditoraccredited etc almost never involving more than two laboratories If one or both of the two participants results are ‘outlying’ in a comparative graph of all participants the traditional way of looking at it is that one measurement result ‘up
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