Methods and Systems for Removing Pressure and Air from Chromatography Columns

    公开(公告)号:US20220297029A1

    公开(公告)日:2022-09-22

    申请号:US17836412

    申请日:2022-06-09

    Abstract: Methods and systems for removing gases and/or pressure formed during the sterilization, e.g., the gamma irradiation, of prepacked chromatography systems (column plus attached tube and valve set) are described. The methods include purging the gas and/or pressure through specially designed tube and valve sets without breaching the sterility of the prepacked sterile chromatography system. The systems include a sterile or aseptic pre-packed chromatography column including a column having an inlet and an outlet, a tubing and valve set attached to the inlet and the outlet, and a pump configured to pump sterile or aseptic liquid from the fluid source along the tubing and valve set, into the column tube inlet and out of the column tube outlet along a first flow path, thereby removing any entrapped gas and/or pressure from the chamber.

    Multi-Modal Ion-Exchange Membranes for Rapid Separations

    公开(公告)号:US20200047086A1

    公开(公告)日:2020-02-13

    申请号:US16100319

    申请日:2018-08-10

    Inventor: JINXIANG ZHOU

    Abstract: Ion exchange membranes (e.g., anion exchange membranes) and methods of using the membranes are described. The ion exchange membranes are multi-modal ion exchange membranes containing a plurality of multi-modal exchange ligands. The membranes can achieve high dynamic and equilibrium binding capacities at solution conductivities typical for production of biologics (e.g., greater than about 10 mS/cm) and can provide excellent binding at high flow rates. Systems incorporating the membranes can dramatically increase isolation and purification speeds. Membranes are disclosed for use in production of biologics.

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