Topics - Stationary phase

Thestationary phase is the part of the chromatographic system though which the mobile phase flows where distribution of the solutes between the phases occurs. The stationary phase may be a solid or a liquid that is immobilized or adsorbed on a solid. In general immobilization by reaction of a liquid with a solid is used in liquid chromatography and absorbtion of a liquid on a solid is used in gas chromatography but there are many exceptions to both of these generalizations. The stationary phase may consist of particles (porous or solid), the walls of a tube (eg. capillary) or a fibrous material (eg paper).