An inexpensive and rapid method for preparing thin-layer chromatography plates for use in the classroom

Abstract

A method is described for preparing thin-layer chromatography plates for use in the classroom. Glass plates are coated with adsorbent using a technique which is cheap, rapid and reliable and which avoids the need for expensive, commercially-available apparatus. It can be adapted to preparative use. The main adsorbent described is silicic acid H and G but other adsorbents such as cellulose can be spread by the same method. Points to watch for in setting up plates for thin-layer chromatography and applying solute samples are discussed.