Membrane device for sterility testing
US4640777A · kind A · utility
13Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1983 |
| Grant date | Feb 3, 1987 |
| Priority date | — |
| Expiry date | Dec 23, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for testing the sterility of fluids consisting of at least one hermetically sealed test container formed from a top portion, a bottom portion, a filter holder and a test filter. The filter is formed entirely from a hydrophilic material. The filter holder and test filter are welded to the top and bottom portions by a pressure-tight and vacuum-tight connection. Fluid is passed through the apparatus and through the test filter to deposit any microorganisms on the filter. Lateral bypass of fluid around the periphery of the test filter is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.