by Nacalai
Conventionally end-capped C18 columns still have many residual silanol groups on the silica surface of stationary phase that can form ionic bonds with basic compounds. The resulting peak tailing makes accurate quantification of analytes difficult, especially in trace analyses. COSMOSIL 3C18-EB with a better end-capping treatment offers improved peak shape and separation particularly for basic compounds.
| Vendor | Nacalai | Pore size | 120 |
| Brand | COSMOSIL 3C18-EB | Surface Area | 300 |
| Modifification | Silica/C18 | Carbon Load, % | 14.5 |
| Mode | Reversed-Phase | Endcapped | Yes |
| Particle Size | pH stability from | 2.0 | |
| Length | pH stability to | 10.0 | |
| Internal Diameter |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| SGE Analytical Science | ProteCol C18 H (PEEK Coated) | Reversed-Phase | Silica/C18 | 4.6 mm | 50 mm | 3.0 μm | 120 Å | On request |
| Phenomenex | Cosmosil | Reversed-Phase | Silica/C18 | 4.6 mm | 150 mm | 5.0 μm | N/A Å | On request |
| KYA Technologies Corporation | HiQ Sil C18W - 120 | Reversed-Phase | Silica/C18 | 4.6 mm | 35 mm | 5.0 μm | 120 Å | On request |
| BISCHOFF | ProntoSIL Enviro-PHE 100-7-C18 | Reversed-Phase | Silica/C18 | 2.1 mm | 250 mm | 7.0 μm | 100 Å | On request |
| Higgins Analytical | CLIPEUS C18 | Reversed-Phase | Silica/C18 | 0.3 mm | 30 mm | 5.0 μm | 120 Å | On request |
| BISCHOFF | ProntoSIL 120-3-C18 ace-EPS PEEK | Reversed-Phase | Silica/C18 | 4.0 mm | 200 mm | 3.0 μm | 120 Å | On request |
| GL Sciences | Inertsil ODS-3 | Reversed-Phase | Silica/C18 | 1.0 mm | 100 mm | 3.0 μm | 100 Å | On request |
| Princeton Chromatography Inc. | Ultima C18-100 | Reversed-Phase | Silica/C18 | 7.8 mm | 250 mm | 10.0 μm | 100 Å | On request |
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