Hypercarb HPLC Column 25x250mm. Preparative column, xtendedLife, Reversed Phase, Carbon Load: 100%, Max. Pressure: 3500 psi (240 bar), Particle Size: 5 um, pH: 0 to 14, Pore Size: 250A, Surface Area: 120m2/g, USP Type: L109, Stationary Phase: Porous Graphitic Carbon, Dimension: 25x250mm