by RESTEK
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.
| Vendor | RESTEK | Pore size | 100 |
| Brand | Ultra | pH stability from | 2.5 |
| Modifification | Silica/Polar modified C18 | pH stability to | 8.0 |
| Mode | Reversed-Phase | Carbon Load, % | 15.0 |
| Particle Size | Endcapped | No | |
| Length | Operating Temperature | 80 | |
| Internal Diameter |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Welch Materials | Ultisil Polar-RP | Reversed-Phase | Silica/Polar modified C18 | 4.6 mm | 350 mm | 5.0 μm | — | On request |
| RESTEK | Ultra | Reversed-Phase | Silica/Polar modified C18 | 3.2 mm | 30 mm | 3.0 μm | 100 Å | On request |
| RESTEK | Ultra | Reversed-Phase | Silica/Polar modified C18 | 4.6 mm | 30 mm | 5.0 μm | 100 Å | On request |
| RESTEK | Ultra | Reversed-Phase | Silica/Polar modified C18 | 3.2 mm | 30 mm | 5.0 μm | 100 Å | On request |
| Welch Materials | Ultisil Polar-RP | Reversed-Phase | Silica/Polar modified C18 | 4.6 mm | 250 mm | 3.0 μm | — | On request |
| RESTEK | Ultra | Reversed-Phase | Silica/Polar modified C18 | 4.6 mm | 150 mm | 5.0 μm | 100 Å | On request |
| RESTEK | Pinnacle DB | Reversed-Phase | Silica/Polar modified C18 | 3.2 mm | 150 mm | 5.0 μm | 140 Å | On request |
| RESTEK | Pinnacle DB | Reversed-Phase | Silica/Polar modified C18 | 2.1 mm | 100 mm | 5.0 μm | 140 Å | On request |
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