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Topsil
Topsil™ HPLC columns are manufactured by Welch Materials Inc., located in Shanghai, China. The phases are based on high-purity silica gel, which is available in different common reversed phase and normal phase modifications. The columns are good for the analysis of small molecules and peptides.
Technical Data
| Phase-Name | Modification | Particle Size | Pore Size | End-capping | C-Content | USP | Surface | pH-Range | Tmax |
| Topsil™ C18 | C18 | 5 µm | 150 Å | + | 12% | N/A | 260 m2/g | 2.0‒8.0 | N/A |
| Topsil™ C8 | C8 | 5 µm | 150 Å | + | 10% | N/A | 260 m2/g | 2.0‒8.0 | N/A |
| Topsil™ Phenyl | Phenylhexyl | 5 µm | 150 Å | + | 12% | N/A | 260 m2/g | 2.0‒8.0 | N/A |
| Topsil™ CN | Cyano | 5 µm | 150 Å | + | 6% | N/A | 260 m2/g | 2.0‒8.0 | N/A |
| Topsil™ NH2 | Amino | 5 µm | 150 Å | - | 3% | N/A | 260 m2/g | 2.0‒8.0 | N/A |
| Topsil™ Silica | - | 5 µm | 150 Å | - | - | N/A | 260 m2/g | 2.0‒8.0 | N/A |
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