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by Welch Materials
| Vendor | Welch Materials | Length | 250 |
| Brand | Topsil Phenyl | Internal Diameter | 4.6 |
| Modifification | Silica/Phenyl | Pore size | 150 |
| Mode | Reversed-Phase | Surface Area | 250 |
| Particle Size | 3.0 | Endcapped | Yes |
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