Accuracy management system for food analysis
2008
Kojima, T.(Meiji Dairies Corp., Odawara, Kanagawa (Japan). Food Technology Research Inst.) | Takenaka, R. | Mihara, T. | Tsuchita, H. | Ohki, S.
In testing laboratories operated by food companies, ensuring the reliability of test results is imperative. ISO/IEC 17025 is an international standard dealing with a management system that should be investigated by laboratories analyzing dairy products, including milk. ISO/IEC 17025 accreditation is given to competent laboratories, if they wish to demonstrate that they operate a management system, are technically competent, and are able to generate technically valid results. To install a system yielding test results that are accepted throughout the world and that demonstrate product safety to consumers, companies need to take proactive measures to install a laboratory system in accordance with ISO/IEC 17025. Of the various requirements of ISO/IEC 17025, technically important items include uncertainty verification, validity confirmation, traceability establishment, and so on. In particular, uncertainty verification indicates test result reliability at each laboratory. While the basic procedures for estimating uncertainty are clear, how various components of uncertainty in each step are accurately identified and assessed is crucial. In the present article, the results of an uncertainty assessment of the Gerber method, a test to measure fat in milk and other foods, at our laboratory are discussed.
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