In this Demonstration, two components (A and B) are separated by liquid chromatography using the stagewise model. This model considers the chromatographic column to be a series of 50 well-mixed stirred tanks or 50 perfect equilibrium stages. Linear adsorption isotherms with equilibrium constants are assumed for this stagewise model. The two peaks at the exit of the column are plotted. These peaks are symmetric because of the linear equilibrium hypothesis. The order of elution of the two components depends on the relative values of their equilibrium constants, which can be chosen by the user. Due to dispersion, peaks get broader and smaller for larger elution times.