Sepromax® CM50 Weak Cation Exchange Pre-Packed Column (50 μm)

Sepromax® CM50 is a carboxylic acid-based weak cation exchange resin used for the separation and purification of proteins such as monoclonal antibodies. Sepromax® CM50 features excellent pressure resistance, a pore structure suitable for mass transfer of large protein molecules, and excellent hydrophilicity. Utilizing "tentacle" surface derivatization technology, the Sepromax® CM50 resin not only has a greater number of effective functional groups than traditional resins, allowing biomolecules to bind more effectively to these functional groups, but the "tentacle" structure also reduces non-specific interactions between biomolecules and the packing substrate, thereby improving the recovery rate of target molecules.
Thanks to the monodispersity and large pore size of the substrate, Sepromax® CM50 maintains excellent high loading capacity at high flow rates. As the flow rate increases from 100 cm/h to 500 cm/h, the dynamic loading capacity of Sepromax® CM50 for lysozyme remains essentially unchanged.

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Background

Sepromax® IEX is a series of ion exchange packings developed based on PS-DVB microspheres. Its matrix structure is completely different from hydrophilic polysaccharide substrates such as agarose and cellulose. Firstly, it possesses excellent mechanical properties, capable of withstanding pressures up to 10 MPa; secondly, its large 1000 Å pore size ensures the free entry and exit of biomolecules; finally, its unique coating technology imparts sufficient hydrophilicity, guaranteeing excellent biocompatibility.
Sepromax® IEX packings all employ "tentacle" surface derivatization technology, where functional groups are covalently bound to the substrate surface in the form of linear polymer chains. Compared to traditional ion exchange packings that are directly modified on the surface or only use short-chain bound functional groups, Sepromax® IEX not only has a greater number of effective functional groups, but its reduced steric hindrance allows macromolecular proteins, antibodies, viruses, and plasmids to bind more effectively to the packing's functional groups, significantly increasing binding capacity. Furthermore, the "tentacle" structure effectively reduces non-specific interactions between biomolecules and the packing matrix, thereby improving the recovery rate of target molecules.