QUALITY OF TEST RESULTS EXPRESSED THROUGH MEASUREMENT UNCERTAINTY

Measurement uncertainty can be quantified using calculation/estimation of single components of uncertainty. The application of such approach underestimates uncertainty in measurement partly because it is hardly possible to include all possible components of uncertainty. This paper presents methodology of calculation of measurement uncertainty based on existing and experimentally obtained data on internal quality control, method of data validation, data on inter-laboratory comparison as well as those obtained from reference materials, thus reaching maximum probability of comprising all components of uncertainty. The knowledge of uncertainty in measurement is of great importance for all users of laboratory services, laboratory itself and all interested parties that benefit from the results of research.