Science / Chemistry / Chromatography: Chromatography is a method for separating mixtures based on differences in the speed at which they migrate over or through a stationary phase.

High Performance Liquid Chromatography

Science / Chemistry / High Performance Liquid Chromatography: An efficient form of column chromatography that pumps a liquid solution of the sample at very high pressure through a column packed with a stationary phase made of very tiny particles. The high pressu MORE

Column Chromatography

Science / Chemistry / Column Chromatography: Column chromatography is a method for separating mixtures. A solution containing the mixture is passed through a narrow tube packed with a stationary phase. Different substances in the mixture have di MORE

Adsorption Chromatography

Science / Chemistry / Adsorption Chromatography: A technique for separating or analyzing mixtures that contain at least one component that is preferentially adsorbed by the stationary phase as it moves over it. MORE

Thin Layer Chromatography

Science / Chemistry / Thin Layer Chromatography: A technique for separating components in a mixture on the basis of their differing polarities. A spot of sample is placed on a flat sheet coated with silica and then carried along by a solvent that so MORE

Molecular Sieve

Science / Chemistry / Molecular Sieve: A material that contains many small cavities interconnected with pores of precisely uniform size. Zeolites are an example. Molecular sieves adsorb molecules that are small enough to pass through their MORE

Stationary Phase

Science / Chemistry / Stationary Phase: A stationary phase is a substance that shows different affinities for different components in a sample mixture in a separation of the mixture by chromatography. The mobile phase (a solution containing MORE