BS PD CEN/TR 17421:2019

This document provides guidance to study organizers involved in designing, executing and evaluatingcollaborative studies for multi-analyte methods developed by the various working groups of theCEN/TC 327 "Animal feeding stuffs: Methods of sampling and analysis". The main goal of such studies isto determine the reproducibility standard deviations for the analytes investigated in the selectedmatrices. They are calculated from the repeatability and the between-laboratory standard deviationsdetermined from the study data. An additional goal may be the determination of the trueness (wheneverpossible).Cross References:ISO 78-2ISO 13528ISO 5725-2ISO 5725-5ISO 5725-1