The XR-ODS III column has a 1.6 micron particle size which is ideal for high-speed, high-resolution separations at pressures up to 100 MPa/1000 bar/14,500 psi. Silica particles of uniform size distribution result in rugged column performance, providing excellent peak shapes, durability, and longevity. Each column includes a performance report and physical properties certificate. USP L1, 75A pore size, 21% carbon load, fully endcapped with a pH range from 2-7.5. Maximum operating temperature 80C. A guard column is not available, so an UltraShield pre-column filter is recommended. Use 220-91539-01 for a single filter, 220-91539-03 for a 3/pk, or 220-91539-10 for a 10/pk.