The technique is very similar to the traditional column chromatography, except for that the solvent is driven through the column by applying positive pressure. This allows most separations to be performed in less than 20 minutes, with improved separations compared to the simple column chromatography.

"What Is Flash Chromotography?" LabHut.com. SMI LabHut Ltd, 2011. Web. 24 Mar. 2011. <www.labhut.com/education/flash/index.php>.