Method of measuring the mobility of colloids in an electrical field
US4113596A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1975 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Aug 19, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/447
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for the measurement of the movement of colloidal particles in suspensions or solutions. The apparatus used in this method comprises an electrophoresis tank equipped with two electrodes between which an electrical field can be applied. A 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 electrode away from which the particles move under the effect of the electrical field. In order to determine the mobility of the particles the optical density of the liquid is measured a first time without applying the electrical field, and a second time after having applied the field during not more than 10 seconds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.