It is important to carry out metrological confirmation of the used measuring equipment in order to obtain reliable measurement results during the conformity assessment of products. Assessment of the metrological confirmation of the measuring equipment confirms its conformity with the given measuring task. For proper performance of this task it is necessary to have an appropriate measurement technique. When performing measurements in accordance with a specified method, it is important to clearly comply with the requirements contained in the measuring equipment, the conditions of conducting, the sequence of measurement operations, and the requirements for specialists. The fulfillment of these requirements makes it possible to obtain a reliable result with the necessary accuracy. The implementation of ISO/IEC 17025:2017 is an important step in setting requirements for measurements. This edition of the standard proposes to standardize and evaluate the accuracy of the measurement result not only in uncertainty of measurements, but also in other indicators of accuracy. The analysis of international requirements for equipment, including measurement, techniques of test and measurement, and standardization of requirements of the discussed standard have been carried out. An important factor in the implementation of the standard in Ukraine is the absence of the national standards which could regulate the general requirements for measuring equipment application and assess the obtained results accuracy. In the standard under consideration, the general approaches to the use of equipment and to accuracy of the received results obtained by appropriate techniques are provided.
[1] ISO/IEC 17025:2017. General requirements for the competence of testing and calibration laboratories.
[2] NAAU Management System “General requirements for the competence of testing and calibration laboratories (in accordance with ISO/IEC 17025:2017)”. [On-line]. Available:
[3] ISO/IEC 17025:2005. General requirements for the competence of testing and calibration laboratories.
[4] ISO/IEC 17000:2004. Conformity assessment – Vocabulary and general principles.
[5] ISO 10012:2003. Measurement management systems – Requirements for measurement processes and measuring equipment.
[6] ISO/IEC Guide 99:2007. International Vocabulary of Metrology – Basic and General Concepts and Associated Terms (VIM).
[7] OIML R 34. Recommendation. Edition 1979 (E). Accuracy classes of measuring instruments.
[8] EA-4/02 M: 2013. Evaluation of the Uncertainty of Measurement іn Calibration.
[9] ILAC-G 24/OIML D 10:2010. Guidelines for the determination of calibration intervals of measuring instruments.
[10] ISO 5725-1:1998. Accuracy (trueness and precision) of measurement methods and results. Part 1: General principles and definitions.
[11] ISO 5725-2:1998. Accuracy (trueness and precision) of measurement methods and results. Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method.
[12] ISO 5725-3:1998. Accuracy (trueness and precision) of measurement methods and results. Part 3: Intermediate measures of the precision of a standard measurement method.
[13] ISO 5725-4:1998. Accuracy (trueness and precision) of measurement methods and results. Part 4: Basic methods for the determination of the trueness of a standard measurement method.
[14] ISO 5725-5:1998. Part Accuracy (trueness and precision) of measurement methods and results. 5: Alternative methods for the determination of the precision of a standard measurement method.
[15] ISO 5725-6:1998. Accuracy (trueness and precision) of measurement methods and results. Part 6: Use in practice of accuracy values.
[16] JCGM 100:2008. Evaluation of measurement data – Guide to the expression of uncertainty in measurement (GUM).
[17] JCGM 101:2008. Evaluation of measurement data – Supplement 1 to the “Guide to the expression of uncertainty in measurement” – Propagation of distributions using a Monte Carlo method.
[18] JCGM 102. Evaluation of measurement data – Supplement 2 to the “Guide to the expression of uncertainty in measurement” – Models with any number of output quantities.
[19] JCGM 103. Evaluation of measurement data – Supplement 3 to the “Guide to the expression of uncertainty in measurement” – Modeling.
[20] JCGM 104. Evaluation of measurement data – An introduction to the “Guide to the expression of uncertainty in measurement” and related documents [this document].
[21] JCGM 105. Evaluation of measurement data – Concepts and basic principles.
[22] JCGM 106. Evaluation of measurement data – The role of measurement uncertainty in conformity assessment.
[23] JCGM 107. Evaluation of measurement data – Applications of the least-squares method.
[24] V.Motalo, A.Chereshnevska, “Analysis of indicators of quality of measurements”, Measuring Equipment and Metrology, vol. 79, No. 2, p. 35–41, 2018.