A method to determine at least one filter operating parameter. At least one transponder arranged on or in a filter cartridge of the filter is contactlessly queried by a reading device. A transponder response is analyzed to evaluate the operating parameter. The transponder is subject to influences acting on the filter cartridge. As a result of the influences that the transponder is sensitive to, or sensitivity on transparency or damping properties of a transmission path of electronic signals between the transponder and the reading device, a transponder response behavior is changed to a degree detectable by the reading device or a downstream analysis unit which enables a statement to be made about the operating parameter. A device for determining at least one operating parameter of a filter or a filter cartridge arranged on or in the filter, and a filter cartridge are both provided.

Filter assemblies for filtering wash fluid to be circulated by a circulation pump in a dishwasher appliance are provided. A filter assembly includes a first filter member, a second filter member, a first discharge blade, and a second discharge blade. The filter assembly further includes a shaft extending through the first filter member, the second filter member, a first central bore hole of the first discharge blade, and a second central bore hole of the second discharge blade. The shaft includes a body which has an outer surface, the outer surface including a first threaded portion, a second threaded portion, a first unthreaded portion, and a second unthreaded portion. The plurality of first inner threads mesh with the first threaded portion and the plurality of second inner threads mesh with the second threaded portion.

A method for pre-wetting a polypropylene (PP) filter for filtering slurry and a PP filter package are provided. The method for pre-wetting the PP filter for filter slurry consists of steps of: pre-wetting a PP filtering media of the PP filter and packaging the pre-wetted PP filter in a packaging member sealingly. A PP filter package includes a cartridge, a PP filtering media and a packaging member. The PP filtering media is disposed in the cartridge to form a PP filter. The PP filtering media is pre-wetted, and the PP filter is sealingly packaged in the packaging member.

A method for pre-wetting a polypropylene (PP) filter for filtering slurry and a PP filter package are provided. The method for pre-wetting the PP filter for filter slurry consists of steps of: pre-wetting a PP filtering media of the PP filter and packaging the pre-wetted PP filter in a packaging member sealingly. A PP filter package includes a cartridge, a PP filtering media and a packaging member. The PP filtering media is disposed in the cartridge to form a PP filter. The PP filtering media is pre-wetted, and the PP filter is sealingly packaged in the packaging member.

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 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.

A water filter system includes an upper chamber removably coupled with a lower chamber. In implementations the lower chamber has a sidewall and a rim wider than the sidewall. A filter medium filters water from the upper to the lower chamber. A seal couples between the chambers and has a circular cross-section and a gap receiving a portion of the sidewall. The seal may also have a cavity receiving the rim. The seal includes one or more arced flaps contacting the upper chamber, a tip of each arced flap defining a circular inner opening of the seal. The seal includes one or more first barbs contacting the upper chamber, each first barb forming a circle. The seal includes one or more second barbs contacting the lower chamber, each second barb forming a circle.

In certain embodiments, a system filter has a hollow, perforated, inner structure inside a hollow, perforated, outer structure that define an annular gap that receives granular filtering media retained by an (optional) media liner. An outer filter surrounds the outer structure. An (electric) pump may be located within the inner cavity of the inner structure or external to the system filter. When deployed in an underground vault, vault water flows through the outer filter, the outer structure, the outer portion of the media liner (if present), the filtering media, the inner portion of the media liner (if present), and the inner structure into the inner cavity from where the pump moves the filtered water out of the vault. The outer filter and/or the media liner may have a lipophobic, hydrophilic material that allows water to pass while blocking lipids without having the lipids adhere to the material.

In certain embodiments, a system filter has a hollow, perforated, inner structure inside a hollow, perforated, outer structure that define an annular gap that receives granular filtering media retained by an (optional) media liner. An outer filter surrounds the outer structure. An (electric) pump may be located within the inner cavity of the inner structure or external to the system filter. When deployed in an underground vault, vault water flows through the outer filter, the outer structure, the outer portion of the media liner (if present), the filtering media, the inner portion of the media liner (if present), and the inner structure into the inner cavity from where the pump moves the filtered water out of the vault. The outer filter and/or the media liner may have a lipophobic, hydrophilic material that allows water to pass while blocking lipids without having the lipids adhere to the material.

A filtering device 10 that includes a housing 12 having a plurality of subsections 32, 34, and 36 where each subsection is adapted to receive a filter element 26, 28, and 30. An inlet 18 is disposed at a first location on the housing 12, and an upstream air distribution system is placed in fluid communication with the inlet 18 and with each of the subsections 32, 34, and 36. A downstream air distribution system is located in fluid communication with each subsection 32, 34, and 36, and an outlet 20 in fluid communication with the downstream air distribution system. The upstream and downstream air distribution systems are constructed to cause the same airflow velocity through each subsection. Using such a construction, overall product service life may be increased while minimizing pressure resistance of the total filter.