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Poor performance by analytical laboratories creates significant economic losses. Hence considerable efforts are required for improving the quality of chemical analyses and maintaining a high standard of quality. The economic and legal importance of measurements led authorities to establish measures to evaluate and guarantee the quality of laboratory performance. After the normalisation of minimum requirements for laboratory performance in ISO and later in CEN Standards (ISO 9000 and EN 45000 series), accreditation systems appeared. Further efforts are now necessary to improve and validate the existing methods, to help laboratories set up good quality control systems and submit these to accreditation audits, and to enlarge the quality control to all steps of the analytical chain, from sample collection to final determination. This paper outlines discussions on: (i) the need for harmonisation and validation of analytical measurements; (ii) quality assurance in environmental monitoring; (iii) requirements of accreditation.

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Authors: QUEVAUVILLER P, CEC Bruxelles (BE)
Bibliographic Reference: Article: Analusis Magazine, Vol. 21 (1993) No. 4, pp. M21-M23
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