Paper chromatography separating coloured inks vertical streaks Chromatography is an analytical process that separates a compound into its constituent chemicals Chromatography paper with the ink on it is dipped vertically in a solvent Capillary action draws the solvent up through the paper dissolving the ink As the solvent travels up the paper it takes the various chemicals in the ink with it separating them into a series of coloured bands For example black coloured ink far left is composed of red purple blue and brown inks
