Exsil Pure 120 Si is a bare, unmodified silica-based HPLC stationary phase based on ultra-high purity Exsil Pure 120 silica with a nominal pore size of 120 Å. The exposed silanol surface provides strong polar interactions, making the phase ideally suited for adsorption chromatography and normal-phase HPLC separations.
The 120 Å pore structure offers improved mass transfer and robustness compared to smaller-pore silica materials, resulting in stable retention behavior, reproducible selectivity, and reliable chromatographic performance. Exsil Pure 120 Si enables efficient separations through hydrogen bonding, dipole–dipole interactions, and adsorption mechanisms, particularly for polar and structurally similar compounds.
Controlled silica synthesis, very low metal content, and tight particle size distribution ensure excellent batch-to-batch reproducibility and long-term stability in both routine analysis and method development.
Exsil Pure 120 Si provides strong polar selectivity on a high-purity silica platform, making it a fundamental and reliable stationary phase for normal-phase and adsorption-based HPLC separations of small molecules.
• Bare, unmodified silica-based HPLC phase
• 120 Å pore size optimized for small and medium molecular weight analytes
• Strong polar retention via adsorption mechanisms
• Suitable for normal-phase HPLC separations
• Improved mass transfer and robustness compared to 100 Å silica
• Reproducible retention and stable selectivity
• Very low metal content for sensitive analytical workflows
• High batch-to-batch reproducibility
• Suitable for analytical and preparative HPLC
• Particle sizes available in: 1.5 µm, 3 µm, 5 µm, 10 µm
• Normal-phase HPLC of polar organic compounds
• Adsorption chromatography of small molecules
• Separation of positional isomers and structurally related analytes
• Selectivity screening and method development
• Routine QC in pharmaceutical, chemical, and analytical laboratories
| Particle Sizes |
|
|---|---|
| Pore Size | 120 Å |
| Surface Area | 230 m²/g |
| Phase/Modification | Silica |
| Particle Type | |
| Separation Modes | |
| USP Code | |
| Endcapping | No |
| Carbonload | 0 % |
| pH Range | 2 - 8 |
| Phase | Material Number |
|---|---|
| Exsil Pure 120 Si, 1.5 µm | 5136766. |
| Exsil Pure 120 Si, 3 µm | 5136770. |
| Exsil Pure 120 Si, 5 µm | 5136773. |
| Exsil Pure 120 Si, 10 µm | 5136778. |