Apparatus for the measurement of the mobility of colloids in an electric field
US4070263A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1976 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Sep 9, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/44721
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an improved method and apparatus for the measurement of the movement of colloidal particles in suspensions or solutions, wherein an electrophoresis tank is equipped with two electrodes and a filtering membrane positioned substantially parallel and equidistant to the electrodes. A flat beam of radiation produced at the outside of the tank having a thickness of not more than 1000 .mu. as viewed in the direction of the lines of force of the electrical field set up between the electrodes is directed so as to skim the side of the membrane from which the particles move under the effect of the electric field. With this improved arrangement the influence of secondary interfering phenomena appearing essentially when measuring the movement of colloidal particles in highly mineralized waste waters, can be eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.