RSpak DE413-2E 250x2.0mm Micro Column

The RSpak DE413 HPLC columns 250x2.0mm, 4µm, comprise the semi-microchromatographic variants of the polymethacrylate phase with 25Å pores, including DE413-2B and DE413-2E. RSpak DE413 transfers the broadly pH-stable, ODS-like reversed-phase selectivity to small internal diameters, thereby reducing sample and solvent consumption. The variants are suitable for LC-MS, polar active pharmaceutical ingredients, organic acids and other small ionisable molecules.

Features and Benefits

• Silica-free polymer phases
• Reverse-phase and mixed-mode available
• Wide pH range
• Excellent retention of polar compounds
• Robust specialty phases for sugars and acids

Additional Information

RSpak comprises various polymer matrices made of styrene-divinylbenzene, polymethacrylate, polyhydroxymethacrylate, and polyvinyl alcohol. Selectivity arises either from the intrinsic polymer surface or from additional sulfo, carboxyl, or ammonium groups. As a result, the product family ranges from polymeric reverse-phase columns to HILIC-like distribution, as well as mixed-mode, ligand-exchange, and ion-exclusion mechanisms. The silica-free packing materials are particularly suitable for extreme pH values and highly aqueous mobile phases.

Legal Information

Shodex is a registered trademark of Resonac Corporation, Tokyo, Japan. RSpak is a product line within the Shodex portfolio.