Diffusion cell with filter screen
US5296139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1993 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Jun 16, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2013/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A diffusion cell to facilitate the automated removal of test aliquots of liquid from a receptor chamber of the diffusion cell so as to determine percutaneous absorption through a membrane of a donor media from a donor chamber into the receptor chamber of the diffusion cell. There is utilized a sampling port through which the test aliquot is to be removed, the removal being achieved by means of a sample tube. Within the receptor chamber is located a stirring device in the form of a helical coil which is to be rotated to achieve stirring and homogeneous mixing of the liquid within the receptor chamber. Mounted within the coil is a filter screen to prevent particulate matter over a certain size from entering the sample tube and clogging such.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.