The chair of the General Assembly:
Ulrich Borchers, IWW Water Centre, Germany

The chair of the Advisory Board:
Roberto Morabito, ENEA, Italy

The Secretary:
Frank Baumeister, AQS Baden-Württemberg, Germany

The webmaster:
Michael Koch, AQS Baden-Württemberg, Germany

Association Générale des Laboratoires d'Analyse de l'Environnement, Lille, France:
Karin Vidor

AQUAREF, c/o INERIS, Verneuil en Halatte, France:
Marie-Pierre Strub

AQS-BW at the Institute for Sanitary Engineering, Water Quality and Solid Waste Management - Universität Stuttgart, Germany:
Frank Baumeister

Institut für Hygiene und Umwelt (HU), Hamburg, Germany:
Karla Ludwig-Baxter

BIPEA, Gennevilliers, France:
Bruno Berken

ENEA, Ente per le nuove tecnologie, l'energia e l'ambiente, Roma, Italy:
Roberto Morabito

ielab Calidad, S.L., Alicante, Spain:
Jose Luis Alarcon Ruiz

University of Natural Resources and Applied Life Sciences, Vienna, Department for Agrobiotechnology, IFA-Tulln, Austria:
Wolfgang Kandler

IPL santé, environnement durables, France:
Patrick Thomas

JRC- IRMM, European Commission Directorate general Joint Research Centre, Institute for Reference Materials and Measurements, Geel, Belgium:
Maria de la Calle

IWW Water Centre, Mülheim an der Ruhr, Germany:
Ulrich Borchers

Kemijski Inštitut Ljubljana, Slovenia:
Andreja Drolc

LGC Standards Proficiency Testing, Bury, United Kingdom:
Matthew Whetton

QualityConsult, Roma, Italy:
Saumel Pérez Santana

RWS-WD Rijkswaterstaat Waterdienst, Lelystad, The Netherlands:
Marjan Rietveld

SYKE Proftest, Helsinki, Finland:
Mirja Leivuori

Vituki, Budapest, Hungary:
Csilla Bellavari