DOI: https://doi.org/10.33994/kndise.2021.66.15

D. Smernnytskyi Y. Samus O. Biliaieva T. Romanova

In order to obtain reliable measurement results during the conformity assessment of products in the testing laboratory, it is important to provide metrological confirmation of the used measuring equipment. When performing measurements according to the appropriate methodology, it is important to comply clearly with the requirements for measuring equipment, conditions, sequence of measurement operations, the qualifications of specialists.
Research article considers the general requirements for testing equipment and measurement methodology in accordance with the national standard DSTU ISO / IEC 17025: 2017.Several requirements to the equipment and methodology of confirming their suitability by calibration and verification are analyzed. For accredited laboratories the calibration of measuring equipment, that affects the reliability of obtained results, is mandatory; testing equipment that does not perform measuring functions, must be checked for the compliance with the technical characteristics set out in the testing methods. The requirements for measurement methodology and methods of their suitability confirming through verification and validation are analyzed. The main risks of testing laboratories in the performance of measurements have been identified.

Key words: testing laboratory, testing equipment, measuring equipment, calibration, measurement technique, laboratory accreditation, metrological traceability, accuracy characteristics.