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The establishment of EVISA is funded by the EU through the Fifth Framework Programme (G7RT- CT- 2002- 05112).


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Glossary


nominal ion mass


The nominal ion mass is the mass of an ion for a given empirical formula calculated using the integer mass of the most  abundant isotope of each element (for example, C is 12 Da, H  is 1 Da, and O is 16 Da).


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