CO2 optical sensor for detection and enumeration of microorganisms
US9012209B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2008 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Nov 21, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2300/0851
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new device and method for detecting the presence of living microorganisms in test samples are described. The device includes a container having at least one section transparent to light with an incubation zone defined in the container, the incubation zone containing growth media in which the sample is cultured. A detection zone containing a matrix composed of a polymeric material which is substantially transparent to light, and at least one indicator reagent sensitive to carbon dioxide gas generated by the microorganisms in the incubation zone is located in the transparent section of the matrix. The matrix is configured to facilitate penetration of external light aimed at the transparent section of the container and interaction of the external light with the indicator reagent to yield interactive light that escapes through the transparent section of the container, said interactive light is being indicative of the presence and/or concentration of the microorganisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.