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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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column switching

A chromatographic technique using multiple columns connected by switching valves for improved chromatographic separations or sample cleanup. Fractions from a primary column can be switched to two or more secondary columns, which in turn can be further diverted to additional columns or  to detectors; sometimes called multidimensional  chromatography.

The term "column switching" was found in the following pages:


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