Exsil Avanti BDS Si is a high-purity base-deactivated bare silica stationary phase designed for advanced normal-phase chromatography, adsorption chromatography, and HILIC applications. Built on the proven Avanti BDS platform, this material combines the strong polar selectivity of unmodified silica with reduced silanol activity for improved peak symmetry and reproducibility.
The base-deactivation process minimizes uncontrolled secondary interactions while preserving the intrinsic adsorption characteristics of silica. As a result, Exsil Avanti BDS Si provides controlled polar retention, sharper peak shapes, and more predictable chromatographic behavior, particularly for polar, multifunctional, and structurally related analytes. The highly purified spherical silica matrix ensures excellent mechanical stability, uniform packing quality, and consistent performance under both HPLC and UHPLC conditions. The phase is compatible with traditional normal-phase solvent systems as well as aqueous-organic eluents used in hydrophilic interaction chromatography (HILIC).
Exsil Avanti BDS Si combines the selectivity of high-purity silica with advanced base-deactivation technology—delivering reliable, controlled, and high-resolution separations for polar and adsorption-driven chromatographic methods.
Base-deactivated bare silica
Controlled polar selectivity with reduced silanol activity
Improved peak symmetry compared to conventional silica
High efficiency and reproducible retention behavior
Robust spherical silica for HPLC and UHPLC use
Suitable for normal-phase and HILIC workflows
Normal-phase separation of polar compounds
HILIC analysis of highly hydrophilic analytes
Isomer and structural variant separations
Pharmaceutical and chemical method development
Adsorption-based chromatographic applications
| Particle Sizes |
|
|---|---|
| Pore Size | 145 Å |
| Surface Area | 185 m²/g |
| Phase/Modification | Si |
| Particle Type | |
| Separation Mode | |
| USP Code | |
| Endcapping | No |
| Carbonload | 0 % |
| pH Range | 2 - 8 |
| Phase | Material Number |
|---|---|
| Exsil Avanti BDS Si, 3 µm | 6136944 |
| Exsil Avanti BDS Si, 5 µm | 6136880. |
| Exsil Avanti BDS Si, 10 µm | 6136988. |