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 |
|---|---|---|---|---|---|---|---|---|
| TOSOH | TSKgel | Reversed-Phase | Silica/C18 | 4.6 mm | 75 mm | 5.0 μm | 100 Å | On request |
| Vertical Chromatography | VertiSep BDS C18 | Reversed-Phase | Silica/C18 | 3.2 mm | 150 mm | 5.0 μm | 140 Å | On request |
| Sepax Technologies | Sepax GP 120 C18 | Reversed-Phase | Silica/C18 | 4.6 mm | 150 mm | 3.0 μm | 120 Å | On request |
| Imtakt | Unison UK-C18 | Reversed-Phase | Silica/C18 | 2.0 mm | 10 mm | 3.0 μm | 130 Å | On request |
| KYA Technologies Corporation | HiQ Sil C18W - 120 | Reversed-Phase | Silica/C18 | 0.3 mm | 150 mm | 3.0 μm | 120 Å | On request |
| Welch Materials | Ultisil AQ-C18 | Reversed-Phase | Silica/C18 | 4.6 mm | 150 mm | 10.0 μm | 120 Å | On request |
| Welch Materials | Ultisil AQ-C18 | Reversed-Phase | Silica/C18 | 4.0 mm | 150 mm | 5.0 μm | 120 Å | On request |
| Advanced Materials Technology | Halo Peptide ES-C18 | Reversed-Phase | Silica/C18 | 2.1 mm | 100 mm | 2.7 μm | 160 Å | On request |
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