Chromatography 1
Chromatography 1 : (Chem) A procedure used to fractionate a substance for the purpose of analyzing its constituents. Originally, a method in which a solution of a test sample is percolated through a column of porous material which separates and collects it in layers in the column as more solvent is passed through. Note: The method has been extended to colorless materials. Paper, gas, and thin-layer chromatography are other methods based on the same principles