https://doi.org/10.1351/goldbook.R05376
An @E02042@ procedure used in liquid @C01075@ in which the mobile phase is significantly more polar then the stationary phase, e.g. a microporous silica-based material with chemically bonded alkyl chains. The term 'reverse phase' is an incorrect expression to be avoided.
Sources:
Orange Book, 2nd ed., p. 93 [Terms] [Book]
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 826 [Terms] [Paper]