Abstract:
A sealing case for a filtration cassette that reliably prevents leaks after assembly and installation into a filtration system. The sealing case fits on the filtration cassette and provides a fluid-tight seal between the sealing case and around at least one port in the filtration cassette when installed in a filtration system. The sealing case may comprise two halves that mate together, and each half may be identical. The internal surface of the sealing case is flat or substantially flat.
Abstract:
Chromatography media including a high surface area thermoplastic porous nanofiber and an ion-exchange ligand functionality on the surface of the fiber. The porous nanofibers display a convoluted structure that is comprised of discrete bundles of highly entangled nanofibrils that may be fibrillated or ridged. The porous fibers can be prepared through the extraction of a dissolvable mineral or polymeric porogen that is embedded into the fiber during its manufacture in a melt extrusion process.
Abstract:
Methods of filtering a liquid feed are disclosed. In one version, the method comprises passing a liquid feed through a single pass tangential flow filtration (SPTFF) system and recovering the retentate and permeate from the system in separate containers without recirculation through the SPTFF system. In another version, the method of filtering a liquid feed, comprises passing a liquid feed through a tangential flow filtration (TFF) system, recovering permeate and a portion of the retentate from the system in separate containers without recirculation through the TFF system, and recirculating the remainder of the retentate through the TFF system at least once. The methods can be performed using an SPTFF or a TFF system that comprises manifold segments to serialize the flow path of the feed and retentate without requiring diverter plates.
Abstract:
In various embodiments, the present invention provides a process for separating target proteins from non-target proteins in a sample comprising increasing the concentration of the target proteins and non-target proteins in the sample and subsequently delivering the concentrated sample to a chromatography device. In other embodiments, the invention relates to a process for increasing the capacity of a chromatography device for a target protein by delivering a concentrated sample comprising the target protein to a chromatography device.
Abstract:
An aeration device, and containers or vessels incorporating the same. The aeration device can comprise a plurality of interchangeable aeration elements that can produce gas bubble of different sizes and deliver them to the contents of the container. Also disclosed are containers, such as a disposable or single-use container, optionally having one or more inlets and one or more outlets, an aeration device including a plurality of aeration elements, and a mixer to cause mixing, dispersing, homogenizing and/or circulation of one or more ingredients contained or added to the container. The container can be a bioreactors and the aeration device controls the dissolved gas concentration content of the bioreactor contents, thereby facilitating proper growth of cell cultures in the bioreactor.
Abstract:
A container, such as a disposable or single use bioreactor, optionally having one or more inlets and one or more outlets and a mixer associated with the container to cause mixing, dispersing, homogenizing and/or circu1ation of one or more ingredients contained or added to the container. The container includes a flexible baffle shaped and positioned within the container to improve mixing, particularly to improve low shear mixing. The baffle is positioned within the container so as to disrupt the vortex formed by the mixer, or prevent formation of a vortex. The baffle is shaped with both horizontal and vertical elements to enhance disruption of the vortex across the entire vessel height and provide homogeneous mixing throughout all operating volumes. In certain embodiments, the baffle is X- shaped.
Abstract:
A disposable container, such as a deformable bag, for a fluid, having one or more inlets and one or more outlets and an impeller assembly within the container to cause mixing, dispersing, homogenizing and/or circulation of one or more ingredients contained or added to the container. The region within the container that can contain liquid is funnel shaped, which allows very low fluid level mixing, dispensing while mixing, and a reduction or elimination of vortex formation.
Abstract:
A dispenser (100) for opening a tape like packaging (1), which tape like packaging comprises first and second films (10,11) releasably connected to each other and forming envelopes respectively sealed around an object (9) and disposed sequentially with a predetermined pitch. The dispenser comprises a space (3) for holding a container (2) of the tape like packaging (1), guide elements (6, 7, 8, 12, 13, 14, 15, 17, 18) for spreading apart and separating the first and second films (10,11) at an outlet of a separator (6, 7) trough which the tape like packaging (1) can be passed, when a pulling force is acting on the first and second films (10,11), thereby opening the envelopes and releasing the objects (9) contained therein, and for guiding the separated films. A receiver element (16) is provided that is rotatably supported and that is adapted to releasably hold and simultaneously wind up both the separated first and second films of the tape like packaging (1), thereby imparting the pulling force on the films (10,11), and a drive unit is provided for rotating the receiver element (16). The provision of the common receiver element to releasably hold and simultaneously wind up both separated films considerably reduces the complexity of the mechanical drive system, and facilitates the loading and unloading of the films.