Liquid-liquid:
In this case, two immiscible liquids come in contact with each other. Here, the separation takes place because of favorable partition of one or more components in one of the phases.
1. Non-chromatographic method
i) Liquid-liquid extraction
2. Chromatographic methods
i) Liquid-liquid column chromatography
ii) Liquid-liquid planar chromatography
iii) High pressure liquid chromatography