Product Code. 11325557 Silica gel, TLC high purity grade, without binder, Thermo Scientific™ £582.40 / 5kg Product Code. 11345557 Silica gel, TLC high purity grade, without binder, Thermo Scientific™ £144.56 / 1kg Description Silica gel, TLC high purity grade, without binder is employed for thin layer chromatography plate preparation.