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 |
|---|---|---|---|---|---|---|---|---|
| Welch Materials | Ultisil AQ-C18 | Reversed-Phase | Silica/C18 | 4.0 mm | 250 mm | 3.0 μm | 120 Å | On request |
| MACHEREY-NAGEL | NUCLEOSIL C18 | Reversed-Phase | Silica/C18 | 4.6 mm | 150 mm | 5.0 μm | 120 Å | 226.00 |
| Fortis Technologies | UniverSil C18 | Reversed-Phase | Silica/C18 | 4.0 mm | 75 mm | 5.0 μm | 140 Å | On request |
| ACE | ACE C18-HL | Reversed-Phase | Silica/C18 | 2.1 mm | 30 mm | 5.0 μm | 90 Å | On request |
| BISCHOFF | ProntoSIL 200-5-C18AQ | Reversed-Phase | Silica/C18 | 4.6 mm | 150 mm | 5.0 μm | 200 Å | On request |
| PerkinElmer | Brownlee Validated Aqueous C18 | Reversed-Phase | Silica/C18 | 4.6 mm | 150 mm | 5.0 μm | 100 Å | On request |
| Higgins Analytical | PROTO 200 C18 | Reversed-Phase | Silica/C18 | 1.0 mm | 50 mm | 5.0 μm | 200 Å | On request |
| Dikma Technologies Inc. | Bio-Bond C18 | Reversed-Phase | Silica/C18 | 2.1 mm | 50 mm | 3.0 μm | 300 Å | 373.00 |
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