Ultrasep ES 100 RP1 is a silica-based HPLC column with a 100 Å pore size and a C1 (methyl) bonded phase. As the shortest alkyl chain in reversed-phase chromatography, RP1 provides minimal hydrophobic retention and allows for fast elution of analytes. This makes it particularly useful for compounds that elute too strongly on longer alkyl phases such as C8 or C18.
The column offers excellent reproducibility, sharp peak symmetry, and is well-suited for high-throughput analyses or cases where reduced retention times are desired.
Ultrasep ES 100 RP1 delivers fast elution, reproducible performance, and reliable peak symmetry – the efficient choice for low-retentive reversed-phase HPLC separations.
Silica-based stationary phase with 100 Å pore size
C1 (methyl) bonded phase – USP L13 classification
Minimal hydrophobic retention for faster separations
High reproducibility, resolution, and peak symmetry
Ideal for analytes strongly retained on C8 or C18 columns
Available particle sizes: 3 µm, 5 µm
Fast separations of hydrophobic compounds
Pharmaceutical impurity profiling with short retention times
Environmental and food testing requiring rapid throughput
Method development when low hydrophobic retention is required
| Particle Sizes |
|
|---|---|
| Pore Size | 100 Å |
| Particle Type | |
| Separation Mode | |
| pH Range | 2 - 8 |
| Phase | Material Number |
|---|---|
| Ultrasep ES 100 RP1, 3 µm | u13.10. |
| Ultrasep ES 100 RP1, 5 µm | u15.10. |