Membrane osmometer
US4455864A · kind A · utility
Inventor
Key dates
| Filing date | Feb 18, 1982 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Feb 18, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N13/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention is directed to a membrane osmometer for direct measurement of osmotic pressures comprising a pressure measuring chamber for receiving pure solvent, a sample chamber separated therefrom for receiving solution to be tested, and a semi-permeable membrane contacting a support plate coarsely pervious to liquids, the membrane being located on the side of the support plate adjacent to the sample chamber, wherein the sample chamber comprises, on its surface nearest the membrane, a conical annular surface which, when the sample chamber and pressure measuring chamber are assembled, presses an elastic sealing ring against both the surface of the membrane facing the sample chamber and against an inner surface of the pressure measuring chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.