Ultra Aromax Columns (USP L11)

Ultra HPLC Columns

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.

Particle Size: 3 µm or 5 µm, spherical
Pore Size: 100 Å
Carbon Load: 17%
End-Cap: yes
pH Range: 2.5 to 8
Temperature Limit: 80°C
USP Phase Code: L11
Phase Category: phenyl
Ligand Type: proprietary phenyl ligand