by Higgins Analytical
Keeping in mind that relative retention (α) is a much more powerful term than plates (N) in the expression for resolution in chromatography, choosing a column with different selectivity is almost always more helpful than just going to a smaller particle size when trying to improve a difficult separation. Our new HEAVY columns provide the highest retention of any column we manufacture.
| Vendor | Higgins Analytical | Internal Diameter | |
| Brand | HEAVY C18 | Pore size | 100 |
| Modifification | Silica/C18 | Surface Area | 450 |
| Mode | Reversed-Phase | Carbon Load, % | 22.0 |
| Particle Size | Endcapped | Yes | |
| Length |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Phenomenex | Luna C18(2) | Reversed-Phase | Silica/C18 | 4.6 mm | 250 mm | 15.0 μm | 100 Å | On request |
| Princeton Chromatography Inc. | PrincetonSPHER C18-300 | Reversed-Phase | Silica/C18 | 4.0 mm | 50 mm | 10.0 μm | 300 Å | On request |
| Chromenta | Chromenta KAQ C18 | Reversed-Phase | Silica/C18 | 3.0 mm | 150 mm | 3.0 μm | 120 Å | On request |
| MicroSolv Technology Corporation | Cogent HPS C18 | Reversed-Phase | Silica/C18 | 4.6 mm | 250 mm | 5.0 μm | 120 Å | On request |
| RESTEK | Pinnacle DB | Reversed-Phase | Silica/C18 | 2.1 mm | 50 mm | 3.0 μm | 140 Å | On request |
| ACE | ACE C18-HL | Reversed-Phase | Silica/C18 | 2.1 mm | 125 mm | 5.0 μm | 90 Å | On request |
| ACE | ACE C18-HL | Reversed-Phase | Silica/C18 | 3.0 mm | 50 mm | 3.0 μm | 90 Å | On request |
| Bonna-Agela Technologies | Venusil ASB C18 | Reversed-Phase | Silica/C18 | 50.0 mm | 250 mm | 10.0 μm | 300 Å | On request |
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