Tosoh Bioscience HPLC Guard Column TSKgel SW, 13 μm, 21.5 x 75 mm, for 21.5 mm ID SW Silica

TSKgel SW, SWXL and SuperSW stationary phases are all based on spherical silica particles with very high internal pore volumes. They are available in various particle and pore sizes. All SW-type columns feature low residual adsorption, essential for gel filtration.