The establishment of EVISA is funded by the EU through
the Fifth Framework Programme (G7RT- CT- 2002- 05112).
Supporters of EVISA includes:
a substance added to both samples and standards in such a concentration that largely exceeds the concentration initially present in the substance in the sample. The reason for addition of a radiation buffer is to make the interference from the initial substance in the sample insignificant since now a large excess is added to both sample and standard.