A separation technique in which the stationary phase is present as or on a plane. The plane can be a paper, serving as such or impregnated by a substrate as the stationary bed (paper chromatography, PC
) or a layer of solid particles spread on a support e.g. a glass plate (thin layer chromatography, TLC
). Sometimes planar chromatography is also termed open-bed chromatography.
PAC, 1993, 65, 819. 'Nomenclature for chromatography (IUPAC Recommendations 1993)' on page 825 (https://doi.org/10.1351/pac199365040819)