The establishment of EVISA is funded by the EU through
the Fifth Framework Programme (G7RT- CT- 2002- 05112).
Supporters of EVISA includes:
Certified reference materials for leaching procedures
In case that it is not possible to determine the concentration of the different individual chemical species that sum up the total concentration of an element in a given matrix, that means it is impossible to determine the speciation, it is a useful practice to do fractionation instead. Unfortunately, fractionation schemes lack in selectivity and results produced by different procedures cannot easily be compared.
It is therefore of primary interest to have samples specified for
a well described procedure in order to compare different
CRMs play a major role in the development and validation of
methods and for quality control. The following certified reference
materials (CRMs) are available for the fractionation of different elements from solid materials:
* () =information value only, = original certification no longer valid
NB:! click on the suppliers name to reach the record within EVISA's company database, click on the
material name for a link to the record within EVISA's material Database.