SilicaFlash Irregular Silica Gels, 40-63 �µm (230-400 mesh), 60 Size up to grade 90% Particles for Flash Chromatography: silica for flash & low to medium-pressure preparative chromatography Narrow particle size distribution, Easier to pack and more uniform packing, Superior resolution, Suitable for use with complex matrices For GP(General Pressure) �´ 73 psi (5 bar) Suitable for Organic Molecules (MW < 1,000 Dalton)