Chemistry |
C18 |
Separation Mode |
Reversed Phase |
Particle Substrate |
Hybrid |
pH Range Min |
1 pH |
pH Range Max |
11 pH |
Maximum Pressure |
18000 psi (1240 Bar) |
Endcapped |
No |
Silanol Activity |
Low |
Molecular Weight Range Min |
1000 |
Molecular Weight Range Max |
15000 |
Particle Shape |
Spherical |
Particle Size |
2.5 µm |
Endfitting Type |
Direct-Connect |
Pore Size |
130 Å |
QC Tested |
Peptide |
Format |
VanGuard Pre-column |
Surface Area |
185 |
System |
UHPLC |
Particle Technology |
CSH |
USP Classification |
L1 |
Inner Diameter |
2.1 mm |
Length |
5 mm |
Carbon Load |
15 % |
UNSPSC |
41115709 |
Application |
Peptide |
Brand |
XSelect |
Product Type |
Guards |
Units per Package |
3 pk |
XSelect Peptide CSH C18 VanGuard Pre-column, 130Å, 2.5 µm, 2.1 mm X 5 mm, 1K - 15K, 3/pk
XSelect CSH130 C18 2.5 µm eXtended Performance [XP] columns with ultra-low dispersion hardware provide exceptional separation performance, robustness, and throughput for HPLC assays while enabling a smooth transition path toward UPLC adoption. By removing superfluous connections, the VanGuard pre-column links directly to the intake of an eXtended Performance column, minimizing extra column volumes and leaks. Waters CSH130 C18 particles have a low and precisely defined concentration of positive charges, resulting in a comparatively excellent peak shape for peptides employing either FA- or TFA-containing mobile phases. Because the performance of a CSH130 C18 column is not overly dependent on strong ion pairing agents, it is appropriate for LC or LC-MS applications.
The XSelect Peptide CSH C18 VanGuard Pre-column is based on Charged Surface Hybrid (CSH) Technology, which allows the column to overcome problems such as peak shape asymmetry or poor landing for basic chemicals, column bleed, and sluggish mobile-phase re-equilibrium. The CSH Technology provides various functional advantages to the XSelect Peptide CSH C18 VanGuard Pre-column, including superior peak shape for basic chemicals and high peak capacity for assessing complicated mixtures, which aids in the isolation and quantification of samples. The CSH Technology enhances many aspects of liquid chromatography in acidic, low ionic strength mobile phases, allowing the column to work well and provide similar backpressure.
The Waters XSelect Peptide CSH C18 VanGuard Pre-column will assist your system in providing outstanding batch-to-batch repeatability, allowing you to swiftly design robust techniques and improve loading capacity and particle size scalability. With CSH Technology integrated into the XSelect Peptide CSH C18 VanGuard Pre-column, you can achieve a higher mass load for preparative separation without the use of ion-pairing chemicals. The XSelect Peptide CSH C18 VanGuard Pre-column allows for rapid column equilibration and the ability to swiftly change mobile-phase conditions and pH to screen numerous mobile-phase conditions.
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Under What pH and Pressure Conditions Can The XSelect Peptide CSH C18 VanGuard Pre-column Work?
The XSelect Peptide CSH C18 VanGuard Pre-column offers a recommended operational pH range between 1 and 11 and has been designed to withstand a pressure of 18000 psi (or 1240 Bar); however, it is always recommended not to cross the maximum range to ensure the best possible column lifetime and effectiveness.