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Shim-pack Velox columns consist of core-shell particles. As a result, they provide a higher efficiency compared to fully porous particles of the same size.
Phase | Modification | Particle size | Pore size | Surface area | Carbon content | Endcapping | pH range | USP |
Shim-pack Velox SP-C18 | C18 (sterically protected) | 1.8 μm
| 90 Å | 125 m²/g
| 7 %C
| - | 1.0-8.0 | L1 |
Shim-pack Velox C18 | C18 | 1.8 μm
| 90 Å | 125 m²/g
| 9 %C
| + | 2.0-8.0 | L1 |
Shim-pack Velox Biphenyl | Biphenyl | 1.8 μm
| 90 Å | 125 m²/g
| 7 %C
| + | 1.5-8.0 | L11 |
Shim-pack Velox PFPP | PFP | 1.8 μm
| 90 Å | 125 m²/g
| 4 %C
| - | 2.0-8.0 | L43 |
Shim-pack Velox HILIC | Si | 2.7 μm | 90 Å | 130 m²/g | N/A | N/A | 2.0-8.0 | L3 |
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