Embodiments relate generally to a filter, for example, for attachment onto a gas detector device or a gas sensor, and attempt to improve the efficiency and service life of the filter. Embodiments typically comprise a dustproof membrane and a waterproof membrane. Some embodiments may also comprise a splash-proof cap and/or features to reduce negative pressure on the filters.

Embodiments of the present disclosure describe an isoporous polymer membrane comprising a polymeric film having a plurality of isopores, wherein the isoporous polymer membrane is characterized in that it has one or more of the following features: a porosity of about 20% or greater, a plurality of isopores arranged in an ordered array, wherein the plurality of isopores extend from a first membrane surface to a second membrane surface along an axis perpendicular to the first and second membrane surfaces, a membrane size of about 45 cm.sup.2 or greater, and a pore size of about 2 μm or less. Embodiments of the present disclosure also describe methods of fabricating the isoporous polymer membranes, applications using the isoporous polymer membranes, and the like.

The present application provides a water tank assembly for water purification and a water purification system. The water tank assembly includes: a first water tank, a water inlet guide tube, a water inlet control assembly, a second water tank and a water outlet guide tube. Parameters of the water tank assembly includes a first liquid volume. The first liquid volume is greater than the initiation liquid volume and less than or equal to a level-difference liquid volume. According to the present disclosure, the first cup of water is diluted rapidly to reach the direct-drinking water, ensuring freshness of the direct-drinking water, and allowing the second water tank to take water from the first tank quickly for at least twice.

The present application provides a water tank assembly for water purification and a water purification system. The water tank assembly includes: a first water tank, a water inlet guide tube, a water inlet control assembly, a second water tank and a water outlet guide tube. Parameters of the water tank assembly includes a first liquid volume. The first liquid volume is greater than the initiation liquid volume and less than or equal to a level-difference liquid volume. According to the present disclosure, the first cup of water is diluted rapidly to reach the direct-drinking water, ensuring freshness of the direct-drinking water, and allowing the second water tank to take water from the first tank quickly for at least twice.

A system for filling multiple sterile containers includes a filter with an inlet port and multiple outlet ports, the outlet ports being pre-attached to sterile containers by respective filling lines of each container. Each container has an interior and each of the respective filling lines are connected to a respective container interior. The respective filling lines are sealed to the outlet ports and the containers such that the container interiors are isolated from an external environment except the inlet port, via the filter, forming a combined interior volume which is sterile. A container that is connectable to an outlet port the system has a bladder, a first tube and a second tube connected to the bladder, and a sterilizing filter. The container, the first tube and the second tube, and the sterilizing filter are sterile before water is flowed through the sterilizing filter into the bladder.

A system for filling multiple sterile containers includes a filter with an inlet port and multiple outlet ports, the outlet ports being pre-attached to sterile containers by respective filling lines of each container. Each container has an interior and each of the respective filling lines are connected to a respective container interior. The respective filling lines are sealed to the outlet ports and the containers such that the container interiors are isolated from an external environment except the inlet port, via the filter, forming a combined interior volume which is sterile. A container that is connectable to an outlet port the system has a bladder, a first tube and a second tube connected to the bladder, and a sterilizing filter. The container, the first tube and the second tube, and the sterilizing filter are sterile before water is flowed through the sterilizing filter into the bladder.

Embodiments provide a filter with a generally rectangular, non-cylindrical profile. The filter may have multiple pleat packs positioned between pleat covers that define regions and flow channels in a cavity of the filter body. The pleat covers have openings that allow a fluid to flow through the multiple pleat packs via parallel flows or series flows. End caps bonded to the body define flow passages for directing the fluid from an inlet to an outlet via the pleat packs for series or parallel filtration. The pleat packs may be made of the same or different materials and may be configured with the same or different heights based on flow requirements. A cage or a separator may be positioned between the pleat packs. The pleat packs may be made of a continuous pleated membrane with bridges defining a space between the pleat packs to accommodate the cage or separator.

Embodiments provide a filter with a generally rectangular, non-cylindrical profile. The filter may have multiple pleat packs positioned between pleat covers that define regions and flow channels in a cavity of the filter body. The pleat covers have openings that allow a fluid to flow through the multiple pleat packs via parallel flows or series flows. End caps bonded to the body define flow passages for directing the fluid from an inlet to an outlet via the pleat packs for series or parallel filtration. The pleat packs may be made of the same or different materials and may be configured with the same or different heights based on flow requirements. A cage or a separator may be positioned between the pleat packs. The pleat packs may be made of a continuous pleated membrane with bridges defining a space between the pleat packs to accommodate the cage or separator.

Disclosed herein are rolled-membrane microfluidic diffusion devices and corresponding methods of manufacture. Also disclosed herein are three-dimensionally printed microfluidic devices and corresponding methods of manufacture. Optionally, the disclosed microfluidic devices can function as artificial lung devices.

Described herein are systems and methods for liquid phase separation for fuel tanks and other vessels. Particularly, aspects of the present disclosure are directed to a backpressure regulator configured to open when pressure of a mixture upstream of the backpressure regulator exceeds a predetermined setpoint and a hydrophobic membrane upstream of the backpressure regulator and downstream of a first conduit. The predetermined setpoint may be determined by at least a bubble point pressure of the hydrophobic membrane. Additionally, the backpressure regulator may be fluidically connected to and downstream of the first conduit, and to at least one pump operably connected to and upstream of the first conduit and the hydrophobic membrane may be fluidically connected to and upstream of a second conduit. The backpressure regulator may be fluidically connected to and upstream of a third conduit and the third conduit may be downstream the first conduit.