Devices, systems and methods for elution of particles from flat filters
AssigneeInnovaPrep LLC
InventorsAndrew Edward Page, David Scott Alburty, Alec D. Adolphson, Pamela S. Murowchick, Zachary A. Packingham
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Abstract
Devices, systems and methods are disclosed which relate to using a wet foam elution method for removal of particles from a flat filter. Particles are captured from the atmosphere onto the flat filter. The flat filter is then placed into an extractor which passes a stream of wet foam through the flat filter. Expansion of the foam works to efficiently remove captured particles. The foam flows from the filter along with the captured particles into a sample container. Once in the sample container, the foam quickly breaks down leaving an analysis ready liquid sample.
Claims20
A system for extracting a sample from an aerosol, the system comprising:
- a flat filter adapted to capture aerosol floating in an air flow;
- an extractor for backflushing the flat filter with an elution foam;
- a vent for releasing a positive pressure caused by the elution foam breaking down into a liquid containing a sample;
- and
- a container for collecting the foam once it is backflushed through the flat filter;
- wherein the flat filter collects the sample from the aerosol, then the foam is used to backflush the flat filter into the container.
A method for extracting a sample from an aerosol, the method comprising:
- providing an air flow with aerosol therein;
- collecting particles from the aerosol onto a flat filter;
- backflushing the filter with elution foam;
- and
- releasing a positive pressure caused by the elution foam breaking down into a liquid containing the sample.
A device for extracting a sample from an aerosol, the device comprising:
- a filter material;
- a cassette housing encasing the filter material such that the surface of the filter material is substantially exposed on both sides;
- wherein the cassette housing is adapted to be sealingly inserted between a nozzle and a sample container, the nozzle for an elution foam used to backflush the flat filter into the sample container;
- and
- a vent for releasing a positive pressure caused by the elution foam breaking down into a liquid containing the sample.
Dependencies are inferred from the claim text.