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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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guard column

A short column placed between the sample injector and the inlet of the main ("analytical") column. The guard column is typically packed with the same kind of stationary phase as the main column, and is intended to absorb or pick up impurities (chemical garbage) in the sample or mobile phase that might damage the main column. It is also sometimes called a pre-column.

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


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