Types of Chromatography : 1- Column Chromatography (Sample held directly through top column under gravity effects), 2- Paper Chromatography (Separate substances by cellulose paper as chromatographic sorbent), 3- Thin Layer Chromatography (Sheet of glass or metal or plastic coated with thin layer of solid adsorbent such as silica or alumina), 4- Gas Chromatography (Describe analytical separation in gas phase)
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