The present invention features a simplified sample processing method (e.g., VELOX) to collect high amounts of nucleic acids (e.g., genomic DNA (gDNA)) without equipment and without protein or other contaminants to interfere with sensor signals or similar nucleic acid detection test (sensors or per reagents). Specifically, the present invention provides systems, devices, and methods that allow for isolation and extraction of nucleic acids (e.g., gDNA) especially in a point of need setting.

The present application provides a sample collecting device and a sample collecting apparatus. The sample collecting device includes a housing assembly with a cavity and a filtering unit disposed in the cavity, where the housing assembly is provided with a collecting hole and a suction hole, both of which are communicated with the cavity, the suction hole is communicated with the collecting hole through the filtering unit, the housing assembly is provided with a gateway on its side wall, and at least part of the filtering unit is configured to be moved to an outside of the housing assembly through the gateway. The present application can greatly improve efficiency of sample collection and effectively save the time of medical workers.

A solvent reservoir filter for a liquid chromatograph system includes a first screen extending in a first plane, the first screen configured to filter solvent received through the first screen, a second screen extending in a second plane that is parallel to the first plane, the second screen configured to filter solvent received through the second screen, a main body extending between and connecting the first screen and the second screen, and a fluid outlet configured to expel solvent filtered by the first and second screens from the solvent reservoir filter. Methods of use and assembly of the solvent reservoir filter for a liquid chromatograph system are further disclosed.

A solvent reservoir filter for a liquid chromatograph system includes a first screen extending in a first plane, the first screen configured to filter solvent received through the first screen, a second screen extending in a second plane that is parallel to the first plane, the second screen configured to filter solvent received through the second screen, a main body extending between and connecting the first screen and the second screen, and a fluid outlet configured to expel solvent filtered by the first and second screens from the solvent reservoir filter. Methods of use and assembly of the solvent reservoir filter for a liquid chromatograph system are further disclosed.

The invention relates to a filter unit, a filter system (44b) with at least two filter units, and to a motor vehicle with a filter system (44b). A filter bowl (12d-e) of the filter unit is formed by a base and a cover. Embodied in a side wall of the base are at least two access openings to an antechamber or collection chamber (34a-b) in the filter bowl (12d-e). Embodied integrally with the cover is a collection line segment or supply segment (26d-e) that leads from a clean chamber or an unfiltered side antechamber in the filter bowl (12d-e) to at least two open ends (28l). The inventive filter system (44b) has at least two inventive filter units, and fluid may flow through their filter elements (30, 30a-d), which are switched in parallel. The invention facilitates the space-saving arrangement of filter units and filter systems (44b) in constricted and/or complexly shaped installation spaces, especially in motor vehicles.

The invention relates to a filter unit, a filter system (44b) with at least two filter units, and to a motor vehicle with a filter system (44b). A filter bowl (12d-e) of the filter unit is formed by a base and a cover. Embodied in a side wall of the base are at least two access openings to an antechamber or collection chamber (34a-b) in the filter bowl (12d-e). Embodied integrally with the cover is a collection line segment or supply segment (26d-e) that leads from a clean chamber or an unfiltered side antechamber in the filter bowl (12d-e) to at least two open ends (28l). The inventive filter system (44b) has at least two inventive filter units, and fluid may flow through their filter elements (30, 30a-d), which are switched in parallel. The invention facilitates the space-saving arrangement of filter units and filter systems (44b) in constricted and/or complexly shaped installation spaces, especially in motor vehicles.

A connection mechanism for a suction device for vacuum membrane filtration applications, includes a support for receiving a membrane filter or a filtration base, a cavity formed below the membrane filter or the filtration base, a suction duct which opens centrally into the cavity, and a ventilation duct which opens laterally into the cavity. The connection mechanism further includes a closing element which can be moved into several switching positions and which can block or unblock both the suction duct and the ventilation duct depending on the switching positions.

The present invention relates to a filter panel (1) intended for a drum filter (2), said filter panel (1) having multiple filter holes (3) wherein each filter hole (3) has a length L and a width W, wherein at least a substantial amount of the filter holes (3) has a length which is at least 1.5 times the width W, wherein the filter panel (1) has a free surface area which is higher than 81%, preferably at least 83%, more preferably at least 85%, on a side of the filter panel (1) intended to be in contact with a filter cloth of the drum filter (2).

Disclosed herein is a method, system, and apparatus, for filtering liquid, which uses negative air pressure to draw liquid stream through a filter screen and which cleans that filter screen by periodically modulating the negative air pressure to allow the liquid stream to wash any contaminants from the surface of the filter screen.

Disclosed herein is a method, system, and apparatus, for filtering liquid, which uses negative air pressure to draw liquid stream through a filter screen and which cleans that filter screen by periodically modulating the negative air pressure to allow the liquid stream to wash any contaminants from the surface of the filter screen.