TS 5822-2 ISO 5725-2

TS 5822-2 ISO 5725-2 is a standard focused on the precision side of measurement method performance. It sets out the basic approach for determining the repeatability and reproducibility of a standard measurement method, helping users understand how much variation can be expected when the same method is applied under different laboratory conditions.

Repeatability and reproducibility in precision studies

In measurement science, trueness describes closeness to a reference value, while precision describes closeness among repeated results. This part of ISO 5725 addresses precision as an experimentally estimated quantity. Repeatability refers to agreement obtained under the same laboratory and similar conditions, whereas reproducibility describes agreement across different laboratories. That distinction matters because a method may appear stable in one setting yet behave differently when transferred to another.

The role of collaborative interlaboratory experiments

The standard amplifies the general principles to be observed when designing collaborative interlaboratory experiments used to estimate numerical values for precision. In general technical practice, such studies provide a structured way to observe method-to-method and lab-to-lab variation, making analytical and metrological performance more comparable across users. They are widely associated with quality assurance, method validation, and statistical evaluation of measurement procedures.

This listing is based on ISO 5725-2:1994 and is marked withdrawn. Even so, it remains a useful reference for the terminology and experimental framework used when assessing the precision of measurement methods.