VALIDATION OF CALIBRATION METHODS - A PRACTICAL APPROACH

To comply with point 5.4.5 of ISO/IEC 17025 standard means that the laboratories “shall validate non-standard methods, laboratory designed/developed methods, standard methods used outside their intended scope, and amplifications and modifications of standard methods to confirm that the methods are fit for the intended use” [1]. This requisite of the standard is new and the laboratories are evaluating the approaches for the validation process in terms of the quality system. A procedure for validation of calibration methods is proposed and an example of validation of results of measurements is described.