Superior quality bare silica and stationary phases synthesized on spherical silica. Rely on Welch’s attention to detail for scalability, reproducibility and high performance.
- High mechanical strength endures multiple packing/re-packing cycles
- Ultra-pure (purity > 99.999% SiO2) silica material with near-zero metals contamination
- End-capped materials ensure optimal resolution and peak shape
| Packing Materials | Particle Size (μm) | Pore Size (Å) | Surface Area (m2/g) | Carbon Load % | Endcapping | pH Stability |
|---|---|---|---|---|---|---|
| Ultisil XB-C18 | 7, 10, 20 | 120 | 320 | 17 | Yes | 1.5-10.0 |
| Ultisil XB-C18 | 10 | 300 | 320 | 8 | Yes | 1.5-10.0 |
| Ultisil HS-C18 | 8, 10 | 120 | 320 | 17 | Yes | 1.5-10.0 |
| Ultisil XB-C8 | 10, 20 | 120 | 320 | 12 | Yes | 1.5-10.0 |
| Ultisil LP-C18 | 10 | 120 | 320 | 10 | No | 1.5-10.0 |
| Ultisil AQ-C18 | 10 | 120 | 320 | 12 | Yes | 1.5-10.0 |
| Ultisil XB-Phenyl | 10 | 120 | 320 | 12 | Yes | 1.5-10.0 |
| Ultisil XB-CN | 10 | 120 | 320 | 7 | Yes | 1.5-9.0 |
| Ultisil XB-NH2 | 10 | 120 | 320 | 4 | No | 2.0-8.0 |
| Ultisil SiO2 | 10 | 120 | 320 | 0 | No | 2.0-8.0 |
| Ultisil Diol | 10 | 120 | 320 | 2.5 | No | 2.0-8.0 |
| Ultisil PAH | 10 | 120 | 320 | 22 | Yes | 1.5-10.0 |
| Ultisil Hilic-Amide | 10 | 120 | 320 | 7 | Yes | 2.0-8.0 |
| Ultisil XB-C4 | 10 | 120 | 320 | 8 | Yes | 1.5-10.0 |
| Ultisil XB-C4 | 10 | 300 | 90 | 3 | Yes | 1.5-10.0 |
| Ultisil XB-SAX | 10 | 120 | 320 | 7.5 | No | 2.0-8.0 |
| Ultisil XB-SCX | 10 | 120 | 320 | 12 | No | 2.0-8.0 |
| Ultisil XB-C30 | 10 | 120 | 320 | 22 | Yes | 2.0-6.0 |
| Ultisil Polar-RP | 10 | 120 | 320 | 18 | Yes | 1.5-10.0 |
| Ultisil PFP | 10 | 120 | 320 | 12 | Yes | 1.5-10.0 |
| Xtimate C18 | 7, 10 | 120 | 320 | 14 | Yes | 1.0-12.5 |
| Xtimate SEC | 10 | 120 | N/A | N/A | N/A | 2.0-7.5 |