by Agilent Technologies
ZORBAX Extend-C18
Extend-C18 columns incorporate a unique patented bidentate silane, combined with a double-endcapping process that protects the silica from dissolution at high pH - up to pH 11.5. Columns are best applied for separations of compounds that are either (1) basic and have little or no retention at low or intermediate pHs, (2) more stable or more soluble at high pH, or (3) basic and show poor peak shape at low or intermediate pH.
| Vendor | Agilent Technologies | Pore size | 80 |
| Brand | ZORBAX Extend-C18 | Surface Area | 180 |
| Modifification | Silica/C18 | Endcapped | Yes |
| Mode | Reversed-Phase | Operating Temperature | 60 |
| Particle Size | pH stability from | 2.0 | |
| Length | pH stability to | 11.5 | |
| Internal Diameter |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| RESTEK | Viva | Reversed-Phase | Silica/C18 | 3.2 mm | 30 mm | 3.0 μm | 300 Å | On request |
| Teknokroma | Europa Peptide 120 C18 | Reversed-Phase | Silica/C18 | 21.2 mm | 50 mm | 5.0 μm | 120 Å | On request |
| Fortis Technologies | SpeedCore C18 | Reversed-Phase | Silica/C18 | 4.6 mm | 30 mm | 2.6 μm | 80 Å | On request |
| Merck | Chromolith® | Reversed-Phase | Silica/C18 | 0.2 mm | 50 mm | Monolithic μm | 130 Å | On request |
| Sepax Technologies | Sepax HP 200 C18 | Reversed-Phase | Silica/C18 | 2.1 mm | 150 mm | 5.0 μm | 200 Å | On request |
| SGE Analytical Science | ProteCol C18 G (PEEK Coated) | Reversed-Phase | Silica/C18 | 4.6 mm | 50 mm | 3.0 μm | 300 Å | On request |
| BISCHOFF | ProntoSIL 200-3-C18AQ PEEK | Reversed-Phase | Silica/C18 | 4.0 mm | 200 mm | 3.0 μm | 200 Å | On request |
| Welch Materials | Ultisil AQ-C18 | Reversed-Phase | Silica/C18 | 3.0 mm | 100 mm | 5.0 μm | 120 Å | On request |
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