Equisorb Si is a bare silica HPLC column based on fully porous, high-purity silica, designed for normal-phase and adsorption chromatography. Its active silanol surface provides strong polar retention mechanisms, including hydrogen bonding and dipole-dipole interactions. Equisorb Si is ideal for separating polar compounds, isomers, and neutral organics, offering a cost-effective and stable platform for traditional chromatography methods using non-polar mobile phases.
Equisorb Si delivers reliable and traditional polar retention – a dependable choice for laboratories employing normal-phase and adsorption chromatographic techniques.
Unmodified silica (USP L3) for normal-phase and adsorption chromatography
Strong silanol-based interactions for polar analyte retention
Fully porous silica with consistent particle structure
Compatible with non-polar solvents (e.g. hexane, heptane, ethyl acetate)
Available in 3 µm, 5 µm and 10 µm particle sizes
Separation of polar organics and structural isomers
Adsorption-based sample preparation and dry-loading techniques
Normal-phase workflows in pharmaceutical, botanical, or chemical analysis
Classical method development using silica-based selectivity
| Particle Sizes |
|
|---|---|
| Pore Size | 80 Å |
| Surface Area | 220 m²/g |
| Phase/Modification | Si |
| Particle Type | |
| Separation Modes | |
| USP Code | |
| Endcapping | No |
| Carbonload | 0 % |
| pH Range | 2 to 8 |
| Phase | Material Number |
|---|---|
| Equisorb Si, 3 µm | e03.00. |
| Equisorb Si, 5 µm | e05.00. |
| Equisorb Si, 10 µm | e00.00. |