GromSil Sapphire 65 Si is a normal-phase HPLC column from Dr. Maisch HPLC GmbH, packed with ultra-high-purity, fully porous silica featuring a 65 Å pore size and a highly uniform particle structure. Designed for strong polar retention through active silanol groups, this unmodified phase is ideal for classical normal-phase chromatography, adsorption-based separations, and dry-loading applications in preparative LC.
Its optimized surface activity ensures reproducible retention and peak shape, even in non-aqueous mobile phases.
Thanks to its high-purity surface and robust retention behavior, GromSil Sapphire 65 Si from Dr. Maisch HPLC GmbH is a reliable solution for laboratories performing normal-phase and adsorption chromatography on polar analytes.
Bare silica phase – USP L3 classification
Ultra-pure silica with 65 Å pore size and high surface activity
Strong polar retention via silanol interactions
Excellent batch-to-batch reproducibility and mechanical stability
Available in 5 µm and 10 µm particle sizes
Separation of polar compounds, alcohols, acids, and isomers
Normal-phase chromatography with hexane, heptane, or ethyl acetate
Sample pre-concentration and dry-loading in preparative workflows
Orthogonal selectivity to reversed-phase and HILIC methods
| Particle Size |
|
|---|---|
| Pore Size | 65 Å |
| Particle Type | |
| Separation Modes | |
| USP Code | |
| pH Range | 2 to 8 |
| Phase | Material Number |
|---|---|
| Grom Sapphire 65 Si, 5 µm | GSNPS0507. |