The Ultra line represents Restek’s broadest selection of stationary phases on a single silica support. Made of high-purity, type-B silica that minimizes activity and creates high-density bonding, these columns are designed for selective and reliable HPLC applications.
Ultra Aromax is a unique reversed-phase material that exhibits extreme retention and selectivity for aromatic and/or unsaturated compounds. This column is a great alternative to our Biphenyl phase when increased retention is required, and it’s an excellent choice for gradient LC-MS analyses when conventional columns are not giving adequate retention or selectivity.
Stationary Phase Category: phenyl (L11)
Ligand Type: proprietary phenyl ligand
Particle: 3 µm or 5 µm, spherical
Pore Size: 100 Å
Carbon Load: 17%
End-Cap: yes
Surface Area: 300 m2/g
pH Range: 2.5 to 8
Maximum Temperature: 80 °C
