Eurachem Working Groups
Measurement Uncertainty and Traceability Working Group
This is a joint WG with CITAC.
Terms of Reference
- The EURACHEM/CITAC Measurement Uncertainty and Traceability Working Group has been established and will operate in accordance with the Constitution agreed in the EURACHEM Memorandum of Understanding.
- The EURACHEM/CITAC Measurement Uncertainty and Traceability Working Group will prepare guidance for the evaluation of uncertainties and establishment of traceability in chemical analysis. This guidance will be applicable to all chemical analytical laboratories and will provide guidance on the assessment of uncertainties and establishment of traceability required for accreditation.
- These guides will be developed in collaboration with EA and will be updated as experience is gained in their use.
- The Working Group produced the Eurachem Guide "Quantifying Uncertainty in Analytical Measurement", first published in 1995 and now in its third edition, which was published in 2012. The 2012 edition can be downloaded in PDF form from this website, and several translations of the second and third editions are available.
- The Eurachem guide Use of uncertainty information in compliance assessment, published in 2007, provides guidance on how uncertainty may be taken into account in deciding compliance with a limit.
- In 2003 the Working Group published the present Eurachem guide on "Traceability in Chemical Measurement". This Guide gives principles and guidance for the establishment of measurement traceability in quantitative chemical analysis, and is also available for download here.
The working group has so far published three information leaflets:
- Traceability for analytical measurement summarise the principles of metrological traceability in routine testing.
- Use of uncertainty information in compliance assessment summarises the principles of interpreting results against regulatory or other specification limits.
- Using repeated measurements to improve the standard uncertainty addresses a common problem: when it is appropriate to divuide a standard deviation by the square root of the number of observations when evaluating uncertainty for random variation.
In addition, the WG maintains the leaflet Measurement Uncertainty for Laboratory Customers, originally published by SP and elaborated with Eurolab and others to help customers understand why laboratories report measurement uncertainty.
The Measurement Uncertainty and traceability working group has coordinated several International workshops on measurement uncertainty, including
- Evaluation of measurement uncertainty (Graz, 1994; Berlin, 1997, Lisbon, 2011)
- Measurement Uncertainty in Sampling and Compliance (Berlin, 2008)
- Eurachem Workshop: Quality in Analytical Measurements (Lisbon, 2014)
|EURACHEM||Austria||W Wegscheider||Serbia-Montenegro||Jelena Bebic|
|Finland||Teemu Naykki||Sweden||B Magnusson|
|Estonia||I Leito||Sweden||E Theodorsson|
|Germany||W Bremser||Switzerland||M Rösslein|
|Germany||M Golze||The Netherlands||A van der Veen|
|Germany||R Kaus||The Netherlands||R Kaarls|
|Ireland||Éidín Christie||Turkey||Burcu BİNİCİ|
|Ireland||John Clancy||Turkey||P Yolci|
|Ireland||Breda Moore||United Kingdom||A Williams (Chair)|
|Ireland||M Walsh||United Kingdom||S Ellison (Secretary)|
|IRMM (EC)||P Robouch||United Kingdom||R MacArthur|
|Portugal||R Bettencourt da Silva||Ukraine||O Levbarg|
|CITAC||China||P X Rong||Israel||I Kuselman|
|USA||M Salit||Japan||K Yasuda|
The working group may be contacted via the working group Secretary using the Website contact form.
- Last Updated: Tuesday, 24 May 2016 17:14