Page 32 - Shimadu Consumables Catalog

UHPLC/HPLC Columns

Shim-pack XR Series

Shim-pack XR Series Columns Offer Versatility and Fast Analysis
Shim-pack XR Series columns use a 2.2 µm packing particle size and offer a skillful balance between resolution efficiency and
pressure. An XR Series column provides resolution equivalent to a general-purpose column with 5 µm packing particle size
(Shim-pack VP-ODS), but significantly reduces the analysis time. The pressure on the column under many analysis conditions does
not exceed 35 MPa. Consequently, ultrafast analysis can be comfortably performed on an existing instrument.

Shim-pack XR-ODS Shim-pack XR-C8 Shim-pack XR-Phenyl Shim-pack XR-SIL
Particle Size (µm) 2.2 2.2 2.2 2.2
Pore Size (nm) 12 12 12 12
Surface Area (m2/g) 340 340 340 340
Carbon Loading 18% 11% 11% –
Pressure Tolerance (MPa) 35 35 35 20
Pore Volume (mL/g) 1.05 1.05 1.05 1.05
End-capping Yes Yes Yes –
Bonding Type Monomeric Monomeric Monomeric –
pH Range 2 - 7.5 2 - 7.5 2 - 7.5 –
USP Code L1 L7 L11 L3

Shim-pack XR-ODS Permits Simple Switching from Conventional Analysis

The two chromatograms to the right show differences in analysis
times when using different columns. The lower chromatogram is the
result of analysis using a Shimadzu Shim-pack VP-ODS general-purpose
column. The upper chromatogram is from analysis with a Shim-pack
XR-ODS fast analysis column. As both Shim-pack VP-ODS and Shim-
pack XR-ODS offer identical resolution properties, Shim-pack XR-ODS
maintains the resolution while significantly reducing analysis times.

For more information of smooth transfer of
methods from high-speed analysis to
conventional analysis, please refer to page A-34

Shim-pack XR Series Comprehensive Product Range

In addition to the versatile Shim-pack XR-ODS that is bonded with the C18 group, the comprehensive Shim-pack XR Series product
range includes the Shim-pack XR-C8 that is bonded with the C8 group to give different retention behavior to ODS, Shim-pack
XR-Phenyl that is bonded with the phenylpropyl group, and the normal-phase Shim-pack XR-SIL silica column that achieves higher
speeds.

Pg A-28