Sterilization indicator
US4416984A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 1981 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | May 22, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/22
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A sterilization indicator for testing the effectiveness of a sterilization process and a sterilization process using such an indicator are described. The indicator comprises a first compartment having at least one open end; a gas-permeable, bacteria-impermeable closure covering said open end; said first compartment containing a number of viable microorganisms that are resistant to a related sterilization process; a second compartment moveable with respect to said first compartment; said second compartment having a predetermined quantity of nutrient medium for promoting the growth of said microorganisms; separation means for sealing the nutrient medium in said second compartment; communications means for providing communication between said first compartment and said second compartment when it is desired to contact said microorganisms with said nutrient medium; and a detector composition contained in one of said compartments that is capable of undergoing a detectable change in response to the growth of said microorganisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.