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Viva Biphenyl Columns (USP L11)

  • Excellent for separating peptides or proteins.
  • Rugged, spherical particles, with 300 Å pore size.
  • High proportion of pore/surface area available to large molecules.

Viva columns are based on a wide pore material we designed for optimal large molecule separations. In developing Viva silica, we found that although many commercial wide-pore silicas meet the standard 300 Å mean pore size, most have very broad distributions about this mean, with a significant portion of their pore volume falling below 150 Å. This means a large portion of the surface area is unavailable to larger molecules. Viva columns have a narrow distribution around the mean pore size, permitting a larger portion of the silica surface to play a role in the separation.

particle size: 5 μm
pore size: 300 Å
carbon load: 6.7%
endcap: yes
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase: L11
phase category: phenyl
ligand type: unique Biphenyl
properties:

  • Increased retention for dipolar, unsaturated, or conjugated solutes.
  • Enhanced selectivity when used with methanolic mobile phase.
  • Ideal for increasing sensitivity and selectivity in LC-MS analyses.

catalog#     length  idmodification units
30 mm
    1.0 mm
ea.
50 mm
    1.0 mm
ea.
100 mm
    1.0 mm
ea.
150 mm
    1.0 mm
ea.
200 mm
    1.0 mm
ea.
250 mm
    1.0 mm
ea.
30 mm
    2.1 mm
ea.
50 mm
    2.1 mm
ea.
100 mm
    2.1 mm
ea.
150 mm
    2.1 mm
ea.

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