Culture medium and device using ballasted pH indicators for detection and enumeration of microorganisms
US6391626B1 · kind B1 · utility
24Cited by
21References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Aug 23, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/04
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Media, devices and methods using ballasted pH indicators to detect and enumerate bacterial colonies in a sample are described. The ballasted pH indicators limit the diffusion of the indicator or fluorescent indicator zones associated with the growing microbial colonies in the medium. In addition, the ballasting of certain typically toxic indicators may render these indicators harmless to bacteria without adversely affecting their pH indicating ability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.