The disclosure is directed to a device that includes an upper container configured to receive a fluid sample collected from a mammal into a first opening, the first opening opposite a second opening and a membrane covering at least a portion of the second opening, the membrane configured to allow transmission of a portion of the fluid sample through the membrane.

A crossflow filter includes a rigid cylindrical inner wall and a rigid cylindrical outer wall with an inelastic filter membrane positioned therebetween defining a retentate channel inside the filter membrane and a permeate channel outside the filter membrane. Further, the filter includes transition channels shaped and connected to the inner and outer walls to deliver a flow of fluid from an inlet port to the retentate channel and to capture flow flowing longitudinally along the cylindrical inner and outer walls from both the retentate and permeate channels to respective outlet ports.

The invention concerns a frame (1) for holding a plurality of filtration assemblies (100) and a testing unit (10) for microbiological testing. The frame (1) for holding the plurality of filtration assemblies (100) comprises an array of supports (5) each configured to receive and support one of the filtration assemblies (100) on a common support plane (2), and connection means (6) provided on the periphery (7) of the frame (1) and configured to releasably connect, by a form-locking engagement, a further frame (1) such that the common support planes (2) of the connected frames (1) are contiguous. Further, the testing unit (10) comprises at least one frame (1) packed in a bag (20) in pre-sterilized condition.

A flat-plate filter for water treatment and a flat-plate filter module comprising the same are provided. The flat-plate filter for water treatment according to an embodiment of the present invention comprises: a piece-shaped filtration member comprising a first support and a membrane formed on both sides of the first support; and a support frame fitted in and coupled to the edge of the filtration member so as to support the filtration member, and having a flow path through which filtered water introduced from at least one surface of the filtration member flows, wherein a part of the filtration member is disposed in the flow path or at the edge of the flow path such that the first support is exposed.

A hollow fibre membrane having a coiled, a hemihelix, a helical or an undulated native form, in which the membrane can be stretched by up to 4-times its original length with no plastic deformation, and wherein the native form of the membrane is produced by the asymmetric flow of liquid polymer through an opening of a die or nozzle.

A fuel filter for a fuel system includes a cylindrical frame having a pair of circular openings at longitudinal ends of the frame and a filter membrane, with the frame including a circumferential wall having an aperture and the filter membrane being disposed about an outwardly facing side of the wall and over the aperture. The frame includes tabs, such as deformable tabs, disposed adjacent at the openings for retaining the filter membrane on the frame, and the filter membrane overlaps itself when circumferentially disposed about the wall.

A membrane humidifier for a fuel cell includes a hollow fiber membrane cartridge including a cartridge housing which is formed as a hollow having openings facing opposite sides of the cartridge housing in the longitudinal direction thereof and which has a side wall having a plurality of vent holes, a hollow fiber membrane inserted into an interior of the cartridge housing, and a resin layer filling an inner space of opposite sides of the cartridge housing in the longitudinal direction thereof, a membrane humidifier housing in which the hollow fiber membrane cartridge is formed, and a bulkhead formed in an interior of the membrane humidifier housing, wherein the bulkhead has mounting holes into which ends of the cartridge housing in the longitudinal direction thereof are inserted.

Filter holders and membranes are provided that can be included within a bioreactor bag system. The filter holders and membranes include features that allow incorporation of advanced membrane materials having differing material characteristics than traditional membranes that more closely matched the characteristics of the filter holder.

Filtration apparatus for the assay of biological and biochemical reactants, for example, is provided and includes a substrate such as a plate having one or more wells open at each end, and a porous membrane positioned in each well forming a discrete filtering area. The filtration apparatus includes a seal that is in a compressible relationship with the face of the porous membrane, the surface of the compression element, and the well wall. Each well includes a compression element, such as an internal well insert or sleeve, which compresses the seal so that the seal contacts the membrane face, the surface of the compression element, and the well wall in a liquid-tight manner. The compression element may be configured so that it is fixed in the well such as by an interference fit with the well wall or by bonding to a surface of the substrate.

Devices and methods are provided that permit efficient and selective separation of liquid biological specimens into at least two constituent components to facilitate subsequent quantitative and qualitative analysis on at least one analyte of interest in at least one of the components. The devices generally include one or more sample deposition regions supported on a base. Each sample deposition region includes a separation membrane for separating the liquid biological specimen into two different fractions. The first fraction is trapped by the separation membrane while the second fraction passes through the separation membrane and into a respective collection membrane. The separation and collection membranes are easily separable from the devices and can be utilized for further processing and analysis.