C1-functionalized silica provides extremely mild hydrophobic interactions, enabling rapid elution and controlled retention for very polar or early-eluting analytes. The methyl-bonded surface offers excellent peak symmetry, fast equilibration, and high reproducibility, making it well suited for fast screening methods and compounds requiring minimal hydrophobic retention in reversed-phase chromatography.
| Name | Particle Sizes | Carbon Load | Pore Size |
|---|---|---|---|
| Adsorbosphere XL TMS (C1) | 3 – 10 µm | 3.5 % | 100 Å |
| Allsphere C1 | 3 – 10 µm | 3.5 % | 80 Å |
| Equisil SAS | 3 – 5 µm | 3 % | 120 Å |
| Equisorb C1 | 3 – 10 µm | 3.5 % | 80 Å |
| Exsil 80 C1 (TMS) | 3 – 5 µm | 80 Å | |
| Exsil 100 C1 (TMS) | 3 – 10 µm | 100 Å | |
| Exsil Pure 120 C1 (TMS) | 1.5 – 10 µm | 120 Å | |
| Exsil Avanti C1 (TMS) | 3 – 5 µm | 130 Å | |
| GromSil TMS-2 CP | 3 – 5 µm | 100 Å | |
| GromSil 120 TMS-1 ST | 3 – 5 µm | 120 Å | |
| GromSil 300 TMS-1 ST | 3 – 5 µm | 300 Å | |
| ReproSil 80 C1 | 5 µm | 3 % | 80 Å |
| ReproSil-Pur 120 C1 | 3 – 5 µm | 4 % | 120 Å |
| Ultrasep ES 100 RP1 | 3 – 5 µm | 100 Å |