Devices, systems and methods for elution of particles from flat filters
US9534989B2 · kind B2 · utility
72Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2013 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Aug 16, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/4088
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.