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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 methodologies.

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:

Supplier	Name	Material	Certificate
IRMM	BCR 141 R	Calcarous loam soil	Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Zn: Total concentrations, aqua regia soluble content
IRMM	BCR 142 R	Light sandy soil	Total content (Cd, Co, Cu, Pb, Mn, Hg, Ni), Aqua regia soluble content (Cd, Pb, Ni, Zn)
IRMM	BCR 143 R	Sewage sludge amended soil	Total content (Cd,Co, Cu, Pb, Mn, Hg, Ni, Zn), Aqua regia soluble content (Cd, Cr, Pb, Mn, Ni, Zn)
IRMM	BCR 144 R	Sewage sludhe from domestic origin	Total content (Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Zn), Aqua regia soluble content (Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Zn)
IRMM	BCR 145 R	Sewage sludge	Total content (Cd, Co, Cu, Hg, Mn, Ni, Pb,Zn), Aqua regia soluble content (Cr, Cu, Pb, Ni, Zn)
IRMM	BCR 146 R	Sewage sludge from industrial origin	Total content (Cd, Co, Cr, Cu, Mn, Hg, Ni, Pb, Zn), Aqua regia soluble content (Cd, Co, Cr, Cu, Mn, Hg, Ni, Pb, Zn)
IRMM	BCR 483	Sewage sludge amended soil	EDTA extractable fraction(Cd, Cr, Cu, Ni, Pb, Zn), Acetic acid extractable fraction (Cd, Cr, Cu, Ni, Pb, Zn)
IRMM	BCR 484	Sewage sludge amended terra rossa soil	EDTA extractable fraction (Cd, Cu, Ni, Pb, Zn); Acetic acid extraclable fraction (Cd, Cu, Ni, Pb, Zn)
IRMM	BCR 684	Sediment	Extractable phosphorus in a sequential five-step extraction procedure
IRMM	BCR 700	Organic rich soil	Extractable trace elements following harmonised EDTA and acetic acid extraction procedures (Cd, Cr, Cu, Ni, Pb, Zn)
IRMM	BCR 701	Sediment	Extractable trace elements in sediment following a sequential extraction procedure (Cd, Cr, Cu, Ni, Pb, Zn)
ERML	CC135a	Brick works soil	Total and aqua regia extractable elements
ERML	CC136a	Sewage sludge	Aqua regia extractable elements
LGC	6137	Estuarine sediment	Aqua regia extractable elements
LGC	6141	Soil contaminated with clinker/ash	Aqua regia extractable elements
LGC	6156	Harbour sediment	Aqua regia extractable elements
LGC	6180	Pulverized fuel ash	Aqua regia extractable elements
LGC	6189	River sediment	Aqua regia extractable elements

* () =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.