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Pinnacle DB columns are 100% manufactured by Restek in the Bellefonte, Pennsylvania, facility. Because performance begins with the support, Pinnacle® DB UHPLC columns start with base-deactivated spherical silica that is optimized for UHPLC stability. From there, Restek bonds them with a wide variety of phases to give chromatographers a stable and selective column. These columns combine selectivity and eiciency for UHPLC columns.
Phase |
Particle Size [µm] |
Pore Size [Å] |
pH-Range |
Endcapping |
Cyano | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
Aqueous C18 | 1.9, 3, 5 | 140 | 2.5 - 8 | no |
BiPh | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
C18 | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
C8 | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
IBD | 1.9 | 140 | 2.5 - 8 | no |
PFP | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
Silica | 1.9, 3, 5 | 140 | 2.5 - 8 | no |
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.
Phase |
Particle Size [µm] |
Pore Size [Å] |
pH-Range |
Endcapping |
C18 | 3, 5 | 100 | 2.5 - 8 | yes |
C8 | 3, 5 | 100 | 2.5 - 8 | yes |
C4 | 3, 5 | 100 | 2.5 - 8 | yes |
C1 | 3, 5 | 100 | 2.5 - 8 | - |
Aromax | 3, 5 | 100 | 2.5 - 8 | yes |
Aqueous C18 | 3, 5 | 100 | 2.5 - 8 | no |
Biphenyl | 3, 5 | 100 | 2.5 - 8 | yes |
IBD | 3, 5 | 100 | 2.5 - 5 | no |
PFP | 3, 5 | 100 | 2.5 - 8 | yes |
Cyano | 3, 5 | 100 | 2.5 - 8 | yes |
Amino | 3, 5 | 100 | 2.5 - 8 | no |
Silica | 3, 5 | 100 | 2.5 - 8 | no |
Viva columns are based on a wide-pore material Restek designed for optimal large- molecule separations. In developing Viva silica, Restek 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 signiicant 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.
Phase |
Particle Size [µm] |
Pore SIze [Å] |
pH-Range |
Endcapping |
C18 | 3, 5 | 300 | 2.5 - 8 | yes |
C8 | 5 | 300 | 2.5 - 8 | yes |
C4 | 5 | 300 | 2.5 - 8 | yes |
Biphenyl | 5 | 300 | 2.5 - 8 | yes |
PFP | 5 | 300 | 2.5 - 8 | yes |
Silica | 5 | 300 | 2.5 - 8 | - |
Pinnacle II columns are 100% manufactured by Restek in the Bellefonte, Pennsylvania, facility. Because performance begins with the support, Pinnacle II HPLC columns start with base-deactivated spherical silica that is optimized for HPLC stability. From there, Restek bonds them with a wide variety of phases to give chromatographers a stable and selective column. These columns combine selectivity and eiciency for HPLC columns.
Phase |
Particle Size [µm] |
Pore Size [Å] |
pH-Range |
Endcapping |
Cyano | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
BiPh | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
C18 | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
C8 | 1.9, 3, 5 | 140 | 2.5 - 8 | yes |
PAH | 1.9 | 140 | 2.5 - 8 | no |
Silica | 1.9, 3, 5 | 140 | 2.5 - 8 | no |