Exsil Avanti Si is a premium unmodified silica stationary phase designed for high-performance normal-phase chromatography, adsorption chromatography, and HILIC applications in both HPLC and UHPLC systems. The highly active polar silica surface enables strong interactions through hydrogen bonding and dipole-dipole forces, making it ideal for the separation of polar and structurally related compounds.
The advanced Exsil Avanti high-purity spherical silica platform ensures uniform particle morphology, excellent mechanical strength, and reproducible chromatographic performance. The optimized pore structure supports efficient mass transfer, delivering high column efficiency, sharp peak shapes, and consistent retention behavior — even under high-pressure UHPLC conditions. Exsil Avanti Si is particularly suited for the separation of polar organic molecules, isomers, carbohydrates, lipids, and adsorption-driven analytes. In HILIC mode, the hydrophilic surface promotes stable retention of highly polar compounds under aqueous-organic mobile phase conditions. Its versatility makes it a reliable choice for pharmaceutical, chemical, environmental, and food safety laboratories.
Exsil Avanti Si combines the selectivity of high-purity bare silica with advanced particle technology — delivering precise, reproducible, and high-efficiency separations for polar and adsorption-based chromatographic applications.
High-purity bare silica (Si) stationary phase
Ideal for normal-phase and HILIC chromatography
Strong polar surface interactions for selective separations
High efficiency with excellent peak symmetry
Robust spherical silica particles for long column lifetime
Compatible with adsorption-based and hydrophilic workflows
Normal-phase separation of polar compounds
HILIC analysis of highly hydrophilic analytes
Isomer and structural variant separations
Carbohydrate and lipid analysis
Method development in adsorption chromatography
| Particle Sizes |
|
|---|---|
| Pore Size | 130 Å |
| Surface Area | 195 m²/g |
| Phase/Modification | Si |
| Particle Type | |
| Separation Mode | |
| USP Code | |
| Endcapping | No |
| Carbonload | 0 % |
| pH Range | 2 - 8 |
| Phase | Material Number |
|---|---|
| Exsil Avanti Si, 1.5 µm | 5136621. |
| Exsil Avanti Si, 3 µm | 5136622. |
| Exsil Avanti Si, 5 µm | 5136623. |
| Exsil Avanti Si, 10 µm | 6136934. |