Particle Size:2.2 µm pH Range:2 to 8 Pore Size:120 Å Mode of Separation:Reverse phase Diameter:2.1 or 3 mm (Varies with model) Length:30 to 250 mm (Varies with model) Particle Shape:Spherical Column Type:Reversed-Phase Packing Material:Spherical, fully porous ultrapure silica End Capping:Yes