Chromatography is a method for separating a mixture's solutes that are soluble in the same solvent.
It functions on the adsorption principle. It's used in black ink to isolate the colored components (dyes).
Paper chromatography is a chromatography technique that uses paper strips or sheets as adsorbents.
Chromatography relies on two different 'phases': the mobile phase is the solvent that moves through the paper, carrying different substances with it. the stationary phase is contained on the paper and does not move through it.
Uses of Paper Chromatography :
To examine the fermentation and ripening processes.
To ensure that medicines are pure.
To examine cosmetics.
Adulterants must be detected.
To identify pollutants in beverages and meals.
In biochemical laboratories, to examine reaction mixtures.