Device for testing the sterility of a fluid
US5340741A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Feb 9, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sterility testing device includes a container made up of upper and lower plastic parts between which is welded a hydrophilic microporous membrane filter. The device also includes a removable plastic lid with vent holes. The lid is adapted to be secured to the container in two different positions such that, during in-situ incubation of a culture medium after the filtration of the sample and rinsing, the lid is deformed to allow a passageway for excess pressurized air to be removed from the interior of the container while at the same time preventing ambient air from entering the container. The device thus operates with a single membrane filter and is more economical to manufacture than prior art devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.