Temperature responsive sterility indicator
US3981683A · kind A · utility
58Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1975 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Apr 14, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/226
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sterility indicator comprising a backing strip of a dimensionally stable material e.g. aluminum foil having mounted thereon an organic compound containing oxygen or nitrogen in intimate contact with a wicking means and a cover strip bonded to the backing strip overlaying the organic compound and wicking means. The cover strip is a polymeric rate controlling film which permits water vapor to pass through at a rate sufficient to make the device operative at a temperature to be monitored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.