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

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

A hand-carry gravity-driven water filter with high throughput and water disinfection performance is formed. Membranes used for this water filter can be fabricated using electrospun method and non-solvent induced phase inversion method. A novel composite membrane structure (interwoven composite structure) was designed for further enhances water permeability and mechanical strength. The composite membrane can be composed of nanofibers with different diameter from the same polymer or different polymers. Membrane porosity and surface pore size can be controlled. Silver nanoparticles can be in-situ loaded on the surface of the membranes. The developed filter is effective for removal of a wide range of contaminants (e.g., pathogens, suspended solids and heavy metals). The purification process can be carried out under the drive of gravity (with an option for mechanically-enhanced filtration) without electricity.

Assembly for treating fluids, comprising a support (12) having a first and second oppositely arranged surfaces (121) for backing support of a semi permeable membrane (11), a first fluid conveying compartments (124) interposed between the first and second surfaces, a plurality of first fluid passages (126) extending from the first surface (121) and being in fluid communication with the first compartments (124), and a first duct attached to the support (12) and in fluid communication with the first compartments. The assembly comprises a second compartment (125) arranged for conveying fluid and different from the first compartment, and a second duct attached to the support (12) and configured to be in fluid communication with the second compartment (125).

A planar membrane cartridge includes a support and a semi-permeable membrane layer. The support includes a first layer attached to a second layer and defining a front face and a back face of the support. At least one of the first layer and the second layer form a first embossment and a second embossment. Respective back faces of the first layer and the second layer are attached to each other along edges of the first embossment and of the second embossment, such that the first embossment defines a fluid compartment between the first layer and the second layer and the second embossment defines an internal channel between the first layer and the second layer which is isolated from the fluid compartment. An area of the first layer corresponding to the first embossment is covered by the semi-permeable membrane layer.

A funnel-less filtration device that attaches directly to a storage container such as a cell culture media bottle. The device includes a filter collar containing one or more membranes, an inlet with a coupling device for attaching the filter device to a supply of liquid to be filtered, an outlet at a lower portion of the collar, a vacuum port in the collar below the membrane(s) and a filtered vent in the collar above the membrane(s).

This disclosure provides, among other things, a filtration device comprising an open bottomed multi-well plate, a planar spacer that comprises apertures, and a porous capillary membrane. In the device, the planar spacer is sandwiched between the multi-well plate and the porous capillary membrane and the planar spacer is bonded to both the multi-well plate and the porous capillary membrane via an adhesive. Kits and methods of making the device are also provide.

Membrane cell stack arrangement comprising a housing, a stack of membranes defining flow compartments and a fluid manifold system, wherein the direction of flow through the flow compartments is different to the direction of flow through entry and exit openings and the width of the entry and exit openings are each larger than 45% of the width of the flow compartment.

A piece of substrate material is formed under heat and pressure by a roller against a cavity or platen into a shaped substrate sheet having one or more depressions. Two substrate sheets are bonded together to form a substrate wherein the one or more depressions form one or more interior channels. The substrate is coated with a dope in a casting device having a guide portion corresponding to the shape of the substrate sheets and quenched to form a filtering membrane.

A process for preparing a membrane stack comprising the steps of: (i) interposing a curable adhesive between alternate anion exchange membranes and cation exchange; and (ii) curing the adhesive; CHARACTERIZED IN THAT said adhesive, when cured, has a Shore A hardness of less than 70 and an elongation at break of at least 50%.