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 | Carbon Load, % | 9.0 |
| Modifification | Silica/C4 | Endcapped | Yes |
| Mode | Reversed-Phase | Operating Temperature | 80 |
| Particle Size | pH stability from | 2.5 | |
| Length | pH stability to | 8.0 | |
| Internal Diameter |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| RSTech | HECTOR-M C4 | Reversed-Phase | Silica/C4 | 21.2 mm | 70 mm | 5.0 μm | 100 Å | On request |
| SGE Analytical Science | ProteCol C4 H (PEEKsil) | Reversed-Phase | Silica/C4 | 0.15 mm | 50 mm | 3.0 μm | 300 Å | On request |
| MACHEREY-NAGEL | NUCLEODUR C4 EC | Reversed-Phase | Silica/C4 | 4.6 mm | 100 mm | 5.0 μm | 300 Å | On request |
| KNAUER | Eurosil Bioselect | Reversed-Phase | Silica/C4 | 8.0 mm | 30 mm | 5.0 μm | 300 Å | On request |
| CHEMINDIA | CHEMSIL-BUTYL-C4 | Reversed-Phase | Silica/C4 | 4.0 mm | 150 mm | 3.0 μm | 100 Å | On request |
| Chromenta | Chromenta KB C4 | Reversed-Phase | Silica/C4 | 2.1 mm | 100 mm | 1.8 μm | 120 Å | On request |
| Princeton Chromatography Inc. | PrincetonSPHER C4-300 | Reversed-Phase | Silica/C4 | 4.6 mm | 150 mm | 10.0 μm | 300 Å | On request |
| Higgins Analytical | PROTO 300 C4 | Reversed-Phase | Silica/C4 | 4.0 mm | 30 mm | 5.0 μm | 300 Å | On request |
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