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Information leaflets

Information leaflets

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Category: Information leaflets
Last Updated: Wednesday, 10 April 2024 22:59

pt-cmp-mrg132Eurachem Information Leaflets are short briefing documents on a specific topic. Information leaflets are usually intended to inform a wide audience, including laboratory staff, managers and laboratory customers.

Like Guides, Information Leaflets are developed by the different Working Groups, often in cooperation with other organisations.

Eurachem information leaflets are all available free of charge from the website. Many have been translated into several languages.

Current Eurachem Information Leaflets

The current list of topics and information leaflets is given below. All leaflets are available in English; availability in additional languages is indicated below. "Translations available" indicates that more than four language versions (including English) are available.

Previous editions, which may be available in additional languages, can be found in our publication archive.

Accreditation

Proficiency testing

Measurement uncertainty and traceability

Method validation

Terminology

Withdrawn and Superseded Information Leaflets

Some older Eurachem Information leaflets have been superseded by the current editions listed above or withdrawn as no longer of current interest. Available electronic copies of all superseded guidance are, however, listed in the Publication Archive for reference.

Interlaboratory comparisons other than proficiency testing

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Category: Information leaflets
Last Updated: Thursday, 11 April 2024 12:25

Content

wordcloud 200The international standard ISO/IEC 17025 requires a laboratory to participate in proficiency testing (PT) and/or to participate in interlaboratory comparisons (ILCs) other than PT. However, the Standard gives no guidance as to what these other ILCs might be, or indeed how they might compare in relation to PT.

This leaflet, prepared by the EEE-PT Working Group, outlines other types of interlaboratory comparison and points out some of the limitations as compared to PT.

Availability

Translation

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

 

Notes

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

2. First published 2024-04-10. Current file version (Ed.1a) includes editorial correction to date of publication.

What is the uncertainty factor?

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Category: Information leaflets
Last Updated: Tuesday, 23 May 2023 00:08

Content

Distribution of GMO results showing approximately lognormal distribution

Appropriate expression of the measurement uncertainty (MU) is crucial, and there are situations when the traditional, symmetric, expanded uncertainty interval is not sufficient. This leaflet aims to explain the concept of the uncertainty factor and how it can be used to provide a convenient and realistic uncertainty interval in particular circumstances..

This leaflet was produced by the Eurachem Sampling Uncertainty Working Group and the Royal Society of Chemistry Analytical Methods Committee (AMC) Sampling Uncertainty Working Groups.

Availability

Translation

Please consult the Eurachem Sampling Uncertainty Working Group Chair, directly or by using the UfSWG contact form, if you would like to prepare a translation in your own language.

 

*Publication dates are dates of website publication. English version first published on this site on 2020-07-29.

Let's call a PT scheme a PT scheme!

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Category: Information leaflets
Last Updated: Wednesday, 10 April 2024 23:00

Content

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..

Availability

Translation

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

 

Notes

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.

Use of uncertainty information in compliance (2021)

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Category: Information leaflets
Last Updated: Monday, 01 August 2022 20:59

Content

Acceptance and rejection zones with a guard band used for high confidence of correct rejection ("Stringent Acceptance")This information leaflet is intended for laboratories perfoming chemical analyses. It has been prepared by the Eurachem Measurement Uncertainty and Tracability Working Group (see here for details) to introduce the use of decision rules and guard bands in interpreting results accompanied by measurement uncertainty information. The leaflet summarises the principles described in the Eurachem Guide "Use of uncertainty information in compliance assessment", which is available here.

This revised edition of this information leaflet is amended to reflect changes in the second edition of the compliance Guide.

Availability

 

* Publication dates are dates of publication on this website.

** First published 2021-09-01; amended 2021-12-09.

Translation

Translation into other languages is encouraged for members of Eurachem. Other offers of translation should be directed to the Eurachem Secretariat for permission. The Eurachem policy on maintenance and development of Eurachem guidance, available on the Policies page, gives further information on translation.

Note: The previous (2015) edition is available in English, Czech, Estonian, Finnish, Portuguese, Turkish and Ukrainian.

Previous editions

The previous edition of this leaflet can be found here.

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  1. The importance of method validation
  2. Investigating poor performance in proficiency testing
  3. Proficiency testing schemes for sampling
  4. Use of surplus proficiency test items