Let's call a PT scheme a PT scheme!


Factors affecting PT strategy

Interlaboratory comparisons (ILCs) have been used for more than a century and many important concepts are linked to them.

This leaflet, prepared by the Eurachem PT Working Group, addresses the basic terminology of ILCs, explains why some colloquial terms can be misleading or misunderstood, and the importance of harmonisation..



Please consult the PT Working Group Chair if you would like to prepare a translation in your own language.



1. Publication dates are dates of website publication for the current version.

2. English version (V1) first published on this site on 2022-05-30. Amendment V1a (editorial amendment only) added 2022-07-29.