Proficiency evaluation as a traceability link in chemical metrology |
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Authors: | Stanley Rasberry |
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Institution: | (1) National Institute of Standards and Technology (retired), Current address: 31 Longmeadow Drive, Gaithersburg, MD 20878 e-mail: rasberr@attglobal.net, |
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Abstract: | Traceability implies comparison of the results of measurements, or comparison to national or international measurement standards.
One of several approaches that have been used in chemistry to provide for such comparisons is distribution of proficiency
evaluation materials which have been measured by a reference laboratory. A newer approach is based on receipt and measurement
at a reference laboratory of materials that have been produced and analyzed by other laboratories. Traceability concepts and
approaches to realization will be described together with discussion of the relative merits of various approaches. Extension
into metrological fields other than chemistry will also be explored.
Received: 14 November 2000 Accepted: 11 December 2000 |
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Keywords: | Chemical metrology Traceability Proficiency evaluation Accuracy of chemical analysis Quality assurance in chemistry |
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