What is meant by

Chromatography is a term used for numerous laboratory techniques for the separation of mixtures. The term is derived from Greek word ‘chroma’ meaning ‘color’ and ‘graphein’ meaning ‘to write’. Chromatographic techniques are based on the principles that different components are adsorbed differently on an adsorbent. There are various chromatographic techniques used such as paper chromatography, column chromatography, gas chromatography, etc.