The Eurachem reading list

7. Proficiency testing

Websites and web resources


  • ISO 13528:2015. Statistical methods for use in proficiency testing by interlaboratory comparisons. (
  • ISO/IEC 17043:2010. Conformity assessment -- General requirements for proficiency testing. (



  • Eurachem information leaflets (
    • Proficiency testing schemes for sampling (2020)
    • How to investigate poor performance in proficiency testing (2019)
    • Use of surplus proficiency test items (2019)
    • Proficiency testing – How much and how often? (2016)
    • Selecting the right proficiency testing scheme for my laboratory (2015)
    • How can proficiency testing help my laboratory? (2013)
    • Pre- and post-analytical proficiency testing (2009)
    • Proficiency testing schemes and other interlaboratory comparisons (2005)
  • Eurolab cookbooks (
    • Doc No. 2, Criteria for the selection of a proficiency testing scheme, 2018
    • Doc No. 4, Use of interlaboratory comparison data by laboratories, 2021
    • Doc No. 17, Interlaboratory comparison: The views of laboratories, 2018
  • AMC Technical Briefs, RSC,
    • AMC TB 78-2017 Proficiency testing of sampling
    • AMC TB 74-2016, z-Scores and other scores in chemical proficiency testing – their meanings, and some common misconceptions
    • AMC TB 68-2015, Fitness for purpose: the key feature in analytical proficiency testing
    • AMC TB 56-2013, What causes most errors in chemical analysis?
    • AMC TB 19A-2008, General and specific fitness functions for proficiency tests and other purposes – clarifying an old idea
    • AMC TB 18A-2005, What is proficiency testing? Guide for end-users of chemical data
    • AMC TB 18-2004, GMO Proficiency testing: Interpreting z-scores derived from log-transformed data
    • AMC TB 16-2004 (revised April 2007), Proficiency testing: assessing z-scores in the longer term
    • AMC TB 11-2002, Understanding and acting on scores obtained in proficiency testing schemes
    • AMC TB 02-2000 (revised December 2005), How to combine proficiency test results with your own uncertainty estimate – the zeta score

Articles and reports

  • ILAC B6:06/2019, Benefits for laboratories participating in proficiency testing programs (
  • I. Kuselman, A. Fajgelj, IUPAC/CITAC Guide: Selection and use of proficiency testing schemes for a limited number of participants – chemical analytical laboratories (IUPAC Technical Report). Pure Appl. Chem., 2010, 82(5), 1099-1135,
  • M. Thompson, S. L. R. Ellison, R. Wood, The International Harmonized Protocol for the proficiency testing of analytical chemistry laboratories, IUPAC Technical Report, Pure Appl. Chem., 2006, 78(1), 145-196, 


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