Cartridge as well as air analysis method and apparatus using it
US6040153A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1999 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Mar 31, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N1/2214
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The cartridge has a body (2) with a grid (7) and an annular wall (8) oriented transversely to this grid and surrounding it, and having a layer (3) of growth media and a flexible fluid-tight film (4) tensioned over an end surface of the annular wall (8) and delimiting an end surface of the layer of growth media (3). According to the method, the surface of the layer of growth media (3) delimited at the time of manufacture by the tensioned film (4) is struck with air jets in order to impact on this surface the microorganisms present in the air. The apparatus has a positioning support common to a sieve for forming the air jets and to the body (2) of the cartridge (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.