Polygram Pre Coated TLC Plates, 200 x 50 mm- A general purpose plate which can be used for most separations. Coated with Silica Gel, average pore diameter 60, layer thickness 0.25mm with fluorescent indicator. Easily cut with scissors forming smaller plates which may be used to facilitate the further development of a given spot. The plates can be rolled to fit into Chromatography cylinders. The carrier sheet is polyester, 0.2mm thick and resistant to all organic solvents commonly used in T.L.C.