Current flow integrity test
US5477155A · kind A · utility
11Cited by
9References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1993 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Aug 11, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/088
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A new method and apparatus is described for conducting an integrity test on porous membranes and membrane filters and for conducting a pore-size characterization of membrane. The method and apparatus apply to membrane integrity tests and pore-size characterizations which are based on the dependence on the pore size of the pressure required to intrude a non-wetting, electrically conductive liquid into and through the pores. Electrical-measurement methods are described for identifying the pressure at which intrusion occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.