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. (


  • EA-4/21 INF: 2018, Guidelines for the assessment of interlaboratory comparisons with few participants organised by laboratories and measurement audits by accreditation bodies in the process of laboratory accreditation (
  • EA-2/18: INF 2015, Guidelines for accreditation bodies on the contents of the scopes of accreditation for proficiency testing providers, 2015 (
  • I. Mann, B. Brookman (Eds), Selection, use and interpretation of proficiency testing (PT) schemes by laboratories, 2nd Edition, Eurachem, 2011 (
  • EA-4/18, Guidance on the level and frequency of proficiency testing participation, 2010 (

Articles and reports

  • ILAC B6:01/2018, 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 (
  • Eurolab cookbooks (
    • Doc No. 2.0, Criteria for the selection of a proficiency testing scheme, 2017
    • Doc No. 42, Use of interlaboratory comparison data by laboratories
  • Eurachem information leaflets
  • 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 (revised April 2007), GMO Proficiency testing: Interpreting z-scores derived from log-transformed data
    • AMC TB 16-2004, 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

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