by Welch Materials
| Vendor | Welch Materials | Length | |
| Brand | Ultisil XB-C4 | Internal Diameter | |
| Modifification | Silica/C4 | Pore size | 300 |
| Mode | Reversed-Phase | Surface Area | 320 |
| Particle Size |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| ACE | ACE C4-300 | Reversed-Phase | Silica/C4 | 0.5 mm | 250 mm | 5.0 μm | 300 Å | On request |
| Sepax Technologies | Sepax GP 120 C4 | Reversed-Phase | Silica/C4 | 0.75 mm | 100 mm | 5.0 μm | 120 Å | On request |
| RESTEK | Viva | Reversed-Phase | Silica/C4 | 2.1 mm | 30 mm | 5.0 μm | 300 Å | On request |
| Thermo Fisher Scientific | Acclaim | Reversed-Phase | Silica/C4 | 0.075 mm | 150 mm | 5.0 μm | 300 Å | On request |
| Higgins Analytical | PROTO 300 C4 | Reversed-Phase | Silica/C4 | 4.6 mm | 50 mm | 5.0 μm | 300 Å | On request |
| ES Industries | Chromegabond 4000 C4 | Reversed-Phase | Silica/C4 | 4.0 mm | 150 mm | 5.0 μm | 4000 Å | On request |
| SiliCYCLE | SiliaChrom XDB1 C4 | Reversed-Phase | Silica/C4 | 20.0 mm | 250 mm | 5.0 μm | 300 Å | On request |
| Luknova | Poro C4-300 | Reversed-Phase | Silica/C4 | 2.1 mm | 50 mm | 5.0 μm | 300 Å | On request |
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