- the separation of mixtures into their constituents by preferential adsorption by a solid, as a column of silica (column chromatography ) or a strip of filter paper (paper chromatography ), or by a liquid.
- the technique of separating and analysing the components of a mixture of liquids or gases by selective adsorption in, for example, a column of powder (column chromatography) or on a strip of paper (paper chromatography)
