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JCGM Working Group on the Expression of Uncertainty in Measurement (GUM)
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JCGM Working Group on the Expression of Uncertainty in Measurement (GUM)
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Working Group 1 (WG1) of the Joint Committee for Guides in Metrology (JCGM) has responsibility for maintaining the Guide to the Expression of Uncertainty in Measurement (GUM), which is now used worldwide at all levels of the measurement chain, from NMIs to industry. An updated version of the GUM has been prepared under the name JCGM 100:2008 (GUM 1995 with minor corrections). In addition, the JCGM-WG1 has decided to produce a series of complementary documents to cover some topics of interest in more detail, whilst also directing them to groups of users with different levels of expertise. Please refer to the News from the JCGM-WG1 for information on the latest publications and the documents in preparation.

Chairman: Dr Walter Bich [ISO]
Istituto Nazionale di Ricerca Metrologica (INRIM)
Strada delle Cacce, 73
I-10135 TURIN
BIPM contact:
Dr Carine Michotte
Bureau International des Poids et Mesures
Pavillon de Breteuil

Members of JCGM-WG1 (GUM)
Dr Jean-Marc Aublant [ISO] Laboratoire national de métrologie et d'essais (LNE), Paris
Prof. Maurice Cox [BIPM] National Physical Laboratory (NPL), Mathematics and Scientific Computing, Teddington
Dr René Dybkær [IUPAC] Region H Frederiksberg Hospital, Department of Standardization in Laboratory Medicine, Frederiksberg
Dr Charles D. Ehrlich [OIML] National Institute of Standards and Technology (NIST), Weights and Measures Division, Gaithersburg
Dr Clemens Elster [IUPAP] Physikalisch-Technische Bundesantalt (PTB), Braunschweig
Dr W. Tyler Estler [BIPM] 7919 Hope Valley Ct., Adamstown, MD 21710
Prof. Brynn Hibbert [IUPAC] School of Chemistry, University of New South Wales, Sydney
Dr Hidetaka Imai [ILAC] National Institute of Technology and Evaluation (NITE), Tokyo
Mr Luis Mussio [OIML] Bureau International de Métrologie Légale, Paris
Dr Lars Nielsen [BIPM] Danish Fundamental Metrology Ltd (DFM), Lyngby
Prof. Leslie Pendrill [ILAC] SP Technical Research Institute of Sweden (SP), Borås
Prof. Lorenzo Peretto [IEC] Department of Electrical Engineering, University of Bologna, Bologna
Dr Antonio Possolo [IEC] National Institute of Standards and Technology (NIST), Statistical Engineering Division, Gaithersburg
Mr Steve Sidney [ILAC] National Laboratory Association (NLA), Pretoria
Dr Adriaan van der Veen [ISO] VSL, Delft
Prof. Graham H. White [IFCC] Dept. of Medical Biochemistry, Flinders Medical Centre, Bedford Park
Dr Wolfgang Wöger [IUPAP] Drosselweg 1, D-50735 Cologne

Corresponding Member
Dr Rüdiger Kessel [IUPAC] Metrodata GmbH, Weil am Rhein