Quality Assurance

Reliable analytical results can only be obtained by the systematic application of quality assurance measures which include documentation, trained personnel, appropriate and calibrated instrumentation, validated methods, and adequate laboratory infrastructure.

Method performance has to be demonstrated by validation procedures employing quality assurance tools such as proficiency or interlaboratory studies, use of reference materials, and application of statistical evaluation (repeatability, reproducibility values and accuracy and precision control charts).
Implementation of quality assurance procedures allows identification of problems and application of corrective actions.

As of June 1997 Codex recommends that laboratories responsible for control of export and import foods comply with ISO/IEC Guide 25 "General Requirements for the Competence of Calibration and Testing Laboratories"., an ultimately in the accreditation of the laboratory by a certified body.

In addition, endorsement of methods of analysis by the Codex Committee on Methods of Analysis and Sampling (CX/MAS) will only be for validated methods, ISO 25 accredited.

Directive 93/99/EEC of the European Union states that food control laboratories are required to become formally accredited to an internationally recognized standard such as ISO Guide 25, participate in proficiency programs and use validated methods. A deadline of July 1999 has been set for compliance with this Directive.

General

Standard / Guides

Reference Materials

Inter-laboratory tests

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