Determination of surface and interfacial tension
US4523456A · kind A · utility
4Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1982 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | May 28, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2013/0241
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The determination of the surface tension of a liquid or of the interfacial tension between two immiscible liquids is effected by drainage methods in which the movement of an air bubble or a droplet of the lighter liquid is observed, certain measurements made and the surface tension or interfacial tension determined from such measurments. The apparatus used, comprising a tapered tube, a rotating uniform diameter tube or a tilted uniform diameter tube, is simple and inexpensive and accurate measurements are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.