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In paper chromatography,chromatography paper is used. This paper contains water trapped in it, whichacts as the stationary phase. On the base of this chromatography paper, thesolution of the mixture is spotted. The paper strip is then suspended in asuitable solvent, which acts as the mobile phase. This solvent rises up thechromatography paper by capillary action and in the procedure, it flows overthe spot. The components are selectively retained on the paper (according totheir differing partition in these two phases). The spots of differentcomponents travel with the mobile phase to different heights. The paper soobtained (shown in the given figure) is known as a chromatogram.
