RSpak JJ-50 2D, 2.0 x 150 mm, HPLC column

The RSpak JJ-50 2D HPLC column 150x2.0mm, 5µm, is based on polyvinyl alcohol with a controlled low amount of quaternary ammonium groups. RSpak JJ-50 2D combines reversed-phase retention with weak anion exchange and thus generates a mixed-mode selectivity for neutral and anionic molecules. The column is suitable for LC-MS separations of polar metabolites, organic acids and phosphorylated compounds.

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.