TS 5822-5 ISO 5725-5

TS 5822-5 ISO 5725-5 is Part 5 of the ISO 5725 series on the accuracy of measurement methods and results, and it focuses on the basic approaches used to determine the precision of a standard measurement method. In metrology, precision describes how closely repeated measurements agree with one another under specified conditions, so it addresses method consistency as a distinct technical property from trueness.

What precision means in practice

In general technical use, precision is associated with repeatability and reproducibility. A measurement method is not judged only by a single result, but also by the spread of results obtained with the same material, by different operators, on different equipment, or at different times. This standard covers the basic methods for evaluating that spread; it does not, from the supplied scope, establish detailed experimental layouts, numerical limits, or complete calculation procedures.

Its place within ISO 5725

The ISO 5725 family provides a structured vocabulary and evaluation framework for describing measurement accuracy. This part is best understood together with the other parts of the series, where general concepts, definitions of trueness and precision, experimental design, and result interpretation form a connected whole. In that sense, the document supports laboratory comparisons, method validation work, and statistical assessment of measurement processes.

This TSE edition is withdrawn, but the subject remains important in metrology, statistical quality assurance, and understanding measurement variability in analytical and industrial testing contexts.