Ultrasep ES 100 RP18e is a silica-based HPLC column with a 100 Å pore size and an endcapped octadecyl (C18) bonded phase. The endcapping reduces residual silanol activity, resulting in improved peak symmetry and enhanced reproducibility, especially for basic and polar analytes.
With its strong hydrophobic retention and broad selectivity, RP18e is suitable for a wide range of reversed-phase applications in pharmaceutical, environmental, and food analysis. Its robust performance and column stability make it an excellent choice for both routine QC and method development.
Ultrasep ES 100 RP18e combines high hydrophobic retention, reduced silanol interactions, and reproducible performance – the reliable choice for robust reversed-phase HPLC separations.
Silica-based stationary phase with 100 Å pore size
Endcapped octadecyl (C18) bonded phase – USP L1 classification
Strong hydrophobic retention with improved peak symmetry
Excellent reproducibility, resolution, and column lifetime
Available particle sizes: 3 µm, 5 µm, 7 µm
Pharmaceutical impurity profiling and drug analysis
Separation of basic and polar analytes with sharp peak shapes
Environmental testing of hydrophobic organic contaminants
Food and beverage analysis requiring robust C18 selectivity
| Particle Sizes |
|
|---|---|
| Pore Size | 100 Å |
| Particle Type | |
| Separation Mode | |
| USP Code | |
| Endcapping | Yes |
| pH Range | 2 - 8 |
| Phase | Material Number |
|---|---|
| Ultrasep ES 100 RP18e, 3 µm | u13.9e. |
| Ultrasep ES 100 RP18e, 5 µm | u15.9e. |
| Ultrasep ES 100 RP18e, 7 µm | u17.9e. |