Hypersil GOLD aQ HPLC Column 10x30mm. Guard 1/8 in.Column, Reversed Phase, Carbon Load: 12%, Max. Pressure: 2200 psi (150 bar), Particle Size: 5 um, pH: 2 to 9, Pore Size: 175A, Surface Area: 220m2/g, Temperature: 60deg C, USP Type: L1, Stationary Phase: C18, Dimension: 10x30mm