International Association of Geoanalysts' Protocol for the Certification of Geological and Environmental Reference Materials: A Supplement |
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| Authors: | Jean S. Kane Philip J. Potts Thomas Meisel Michael Wiedenbeck |
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| Affiliation: | 559 Thoroughfare Road, Brightwood, VA 22715, USA;Faculty of Science, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK;General and Analytical Chemistry, University of Leoben, Franz-Josef Strasse 18, A-8700 Leoben, Austria;GeoForschungsZentrum Potsdam, Telegrafenberg C161, D14473 Potsdam, Germany |
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| Abstract: | The International Association of Geoanalysts (IAG) published a protocol for the certification of reference materials in close accord with the International Organisation for Standardisation (ISO) guidelines (Kane et al. 2003). This article supplements that protocol, providing additional discussion of best approaches for pre-selecting laboratories for participation in certification projects. This discussion also makes a distinction between inter-laboratory certifications, where n = 15 is the general standard, and expert laboratory certifications, where a much smaller number of laboratories will be deemed qualified to provide data of the quality needed for certification. |
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| Keywords: | reference material certification protocol inter-laboratory certification data quality expert laboratories ISO IAG |
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