EUROPEAN COMMISSION JOINT RESEARCH CENTRE Institute for Reference Materials and Measurements Isotope Measurements Unit B-2440 GEEL (Belgium) The International Measurement Evaluation Programme IMEP-17 Trace and Minor Constituents in Human Serum Certification Report U. Örnemark, Α. Uldall, L. Van Nevel, Y. Aregbe, P.D.P. Taylor 2002 EUR 20243 EN EUROPEAN COMMISSION JOINT RESEARCH CENTRE Institute for Reference Materials and Measurements Isotope Measurements Unit Β-2440 GEEL (Belgium) The International Measurement Evaluation Programme IMEP-17 Trace and Minor Constituents in Human Serum Certification Report U. Ôrnemark, A. Uldall, L. Van Nevel, Y. Aregbe, P.D.P. Taylor 2002 EUR 20243 EN LEGAL NOTICE Neither the European Commission nor any person acting on behalf of then is responsible for the use which might be made of the following information. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server (http://europa.eu.