Guidance on how to conduct Round Robin Tests

Guidance on how to conduct Round Robin Tests

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1   Scope

This Technical Report provides guidance for carrying out round robin tests (RRT) and hence for the determination of levels of repeatability (intra-laboratory variability) and reproducibility (inter-laboratory variability).
This Technical Report can also be used to verify the measurement methods, to improve the measurement method, and to qualify laboratories.
It is not applicable for the determination of production variation for a particular product.
General advice on proficiency testing of laboratories is given in EN 17043. This Technical Report can be used in addition to this document.

NOTE The repeatability and reproducibility levels are important factors for the establishment of uncertainty margins of the measurement methods and for the definition of tolerances levels in verification schemes.