The International Measurement Evaluation Programme-IMEP: prospect for 1998
The sixth measurement round, (IMEP-6) Trace Elements in Water, of the International Measurement Evaluation Programme (IMEP) has been completed. IMEP is co-ordinated from the Institute for Reference Materials and Measurements (IRMM). The programme is a tool for field laboratories to compare their results to Systeme International (SI)-traceable values and is offered also to regulating and accrediting bodies. The SI-traceable values are established by isotope dilution mass spectrometry (IDMS) which has the potential to be a primary method of measurement. The accompanying uncertainty ranges are evaluated according to the International Organisation for Standardisation (ISO)-BIPM and EURACHEM guides. A strategy of IMEP is that the SI-traceable values (certified values), which will serve as references, should be obtained by means of well understood measurement processes. Values established by other techniques and serving as references in the IMEP are referred to as assigned values. IMEP-rounds are run in cases where the objective evaluation of measurement results are important (eg for toxic and life-essential elements in water and body fluids).
Bibliographic Reference: Article: CITAC newsletter
Record Number: 199810485 / Last updated on: 1998-05-05
Original language: en
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