Abstract: Fluid containment pressure vessel that eliminates the outer support housing present in certain conventional vessels, and provides an improved cap-to-body interface. In certain embodiments, the cap is threaded and configured to threadingly engage with the body of the pressure vessel, and has sufficient structural integrity to withstand the pressures in the device without the need for a support housing. In certain embodiments, an interlock mechanism is provided that prevents the cap from being opened (e.g., removed from the body) while the device is under pressure. In certain embodiments, a pressure relief valve is provided with a pre-loaded biasing mechanism to achieve the required pressure release rate. The vessel can be used for sample preparation, including purification or concentration of samples, particularly protein samples.

Abstract: Apparatus and method for Immunohistochemistry, including a slide holder assembly fixture, a slide holder, a slide holder frame, and a slide holder frame assembly adapted to be placed in communication with a driving force to draw fluid through the slide holder. The slide holder may include an injection port that allows consistent fluid delivery and recovery, while minimizing the introduction of air bubbles. The slide holder may include a reservoir that allows for filling, soaking, rinsing, flushing, uniform antibody coverage of the tissue and reduces handling time, space, and errors, and one or more sample chambers. The slide orientation in the slide holder allows for visualization of label information and tissue to confirm adequate antibody coverage. A multi-port frame allows multiple assays to be carried out concurrently, and is removable from a vacuum manifold and allows for easy transport from the vacuum manifold to an incubator/refrigerator and back.

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 impeller assembly has a protective hood surrounding at least a portion of the moveable blades or vanes of the impeller assembly and being above at least a portion of the blades or vanes. The hood surrounds the blades or vanes and arcs over the height of the blades or vanes. The hood is shaped in a dome shape or semi-spherical shape that is around and above the impeller blades and acts as a protector for the container surface against the impeller assembly both during shipping and storage as well as when in use, particularly at lower liquid levels.

Abstract: The device for the microbiological analysis of a support adapted to contain microorganisms marked by a fluorophore agent, said agent being adapted to absorb light energy with an absorption spectrum (53) having a crest (53?) at a predetermined absorption wavelength (?2) and to release that energy by emitting light with an emission spectrum (54) having a crest (54?) at a predetermined emission wavelength (?3) distinct from said absorption wavelength (?2), comprises illuminating means; the spectrum (55) of the excitation light coming from the illuminating means having a crest (55?) at a predetermined excitation wavelength (?1) with a predetermined difference between the excitation (?1) and absorption (?2) wavelengths by virtue of which it is made easy to discriminate the light emitted by said fluorophore agent from that coming from the illuminating means.

Abstract: The device for the microbiological analysis of a support adapted to contain microorganisms marked by a fluorophore agent, said agent being adapted to absorb light energy with an absorption spectrum (53) having a crest (53?) at a predetermined absorption wavelength (?2) and to release that energy by emitting light with an emission spectrum (54) having a crest (54?) at a predetermined emission wavelength (?3) distinct from said absorption wavelength (?2), comprises illuminating means; the spectrum (55) of the excitation light coming from the illuminating means having a crest (55?) at a predetermined excitation wavelength (?1) with a predetermined difference between the excitation (?1) and absorption (?2) wavelengths by virtue of which it is made easy to discriminate the light emitted by said fluorophore agent from that coming from the illuminating means.

Abstract: Novel compositions for removing impurities such as, protein aggregates, from a sample containing a protein of interest, e.g., an antibody. Such compositions can be used prior to the virus filtration step during protein purification, to remove aggregates and protect the virus filter from fouling, therefore improving virus filter capacity. A porous solid support including a co-polymer having at least two monomers, wherein at least one of the monomers comprises acrylamide and at least a second monomer comprises a hydrophobic binding group, where the solid support selectively binds protein aggregates, thereby to separate the monomeric protein of interest from the protein aggregates. The method can be performed under neutral to high pH and high conductivity conditions.

Abstract: The invention relates to the filtering of liquid samples, preferably in a laboratory environment, for example for collecting micro organisms from the liquid sample for subsequent testing. The invention provides a method for filtering a liquid sample which comprises providing a blank of a deformable sheet material and a filtration medium, deforming the blank to form a funnel extending above and about the filtration medium, introducing the liquid sample to be filtered into the so formed funnel, and filtering the liquid sample from the funnel through the filtration medium, for example to a downstream receptacle. The method is accordingly based on the concept that the funnel is not or at least not completely preformed but provided in a form of a blank of a deformable material sheet which is deformed so as to form the funnel at the point and time of use during filtration.

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: A needle protector, having a flexible material, a pocket defining an internal volume, a wrapping strap having a plurality of holes, and a main body disposed between the pocket and the wrapping strap; at least one rigid body or cylinder for placement within the internal volume; and; a pin for placement within one of the plurality of holes, wherein the pin is capable of releasabiy locking the pocket and the main body when the wrapping strap is wrapped around the pocket and the main body.

Abstract: The present invention provides methods for increasing purity of an Fc-containing protein by removing protein aggregates during the Protein A chromatography step used during the purification of the Fc-containing protein.

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: The device for the microbiological analysis of a support (41) adapted to contain microorganisms marked by a fluorophore agent comprises illuminating means adapted to illuminate said support (41) comprising two bases (21) on each of which is mounted at least one group of light sources (22), with said sources (22) of that group being regularly spaced from each other to form an array for illuminating said support (41), said bases (21) being fixed to a frame of said device, one on each side of an opening (9) formed in said frame, with said bases (21) being inclined towards each other in the direction of a predetermined location for reception of said support (41) in said device.

Abstract: The present invention provides compact spiral-wound filter elements having cassette-like performance. The invention further provides filtration systems (e.g., TFF systems) and processes (e.g., SPTFF processes) employing compact spiral-wound filter elements having cassette-like performance.

Abstract: A scaling tool for replicating filtration characteristics of a large-scale filtration device, the scaling tool comprising a housing having a fluid inlet and a fluid outlet, and a filter receiving region in fluid communication with the fluid inlet and the fluid outlet and configured to contain a membrane comprising one or more pleats, the filter receiving region being defined by a rigid wall framework configured to hold the one or more pleats of the membrane and compress the pleats in an amount effective to replicate the filtration performance of the large-scale filtration device. Also disclosed is a methodology for configuring a filter receiving region in a scaling tool.

Abstract: Treatment methods for reduction of (1?3)-?-D-glucan leachables from cellulose-containing filter materials are described.

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: A laminate is provided comprising at least one polysulfone and/or polyethersulfone porous membrane heat bonded to a polyvinylidene fluoride substrate.