Community Research and Development Information Service - CORDIS


The aim of the IRMM's International Measurement Evaluation Programme (IMEP) is to test a possible realisation of international measurement comparability for field laboratories through traceability of their measurements to the mole, the SI unit for amount of substance. In IMEP-3, 10 different trace elements (B, Ca, Cd, Cu, Fe, K, Li, Pb, Rb and Zn), in a synthetic and a natural water, were analysed by participating laboratories using their routine methods and graphically compared (in coded form) to certified values, established by IRMM and NIST using an isotope specific method (isotope dilution mass spectrometry, neutron activation). The results obtained for the element Pb in this IMEP-round are presented and used for a more general discussion of the overall performance of the laboratories.

Additional information

Authors: LAMBERTY A ET AL., JRC Geel (BE)
Bibliographic Reference: Paper presented: Eurachem Workshop : European Cooperation in Proficiency Testing, Noordwijkerhout (NL), November 8-9, 1993
Availability: Available from (1) as Paper EN 37961 ORA
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