The establishment of EVISA is funded by the EU through
the Fifth Framework Programme (G7RT- CT- 2002- 05112).
Supporters of EVISA includes:
in biology: the extent to which an element or compound is concentrated in an organism (or specific tissue) over its environment (usually ambient water unless spercified as being related to sediment or diet); usually normalized on weight or volume bases
in analytical chemistry: the extent to which a preconcentration technique concentrates the analyte over the concentration in the original sample.
The term "concentration factor" was found in the following pages: