Lexikon
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thin layer chromatography
a chromatographic technique employing a porous medium of glass or plastic coated with a stationary phase. The sample, e.g. an extract is spotted near the bottom of the medium and placed in a chamber with solvent (mobile phase). The solvent moves up on the effect of capillary forces in the medium and separates the components of the extract, based on affinities for the medium and solvent.