ReproSil Flurosil columns are made of porous, spherical and fluorinated silica gel.
| Phase | Modification | Particle size / μm | Carbon content / %C | Endcapped | pH range | USP Code |
| C8 | C8 | 3, 5 | N/A | + | 2.0-8.0 | L7 |
| C8-NE | C8 | 5 | N/A | - | 2.0-8.0 | L7 |
| RP8F | N/A | 5 | N/A | N/A | 2.0-8.0 | N/A |
| 60 PFP | PFP | 3, 5 | N/A | + | 2.0-8.0 | L43 |
| 120 PFP | PFP | 2.2 | 10 | + | 2.0-8.0 | L43 |
| 100 PFP | PFP | 1.8, 2, 3, 5, 10 | 12 | + | 2.0-8.0 | L43 |