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. <IMAGE>
申请公布号
EP0638798(A1)
申请公布日期
1995.02.15
申请号
EP19940112580
申请日期
1994.08.11
申请人
MILLIPORE INVESTMENT HOLDINGS LIMITED
发明人
PROULX, STEPHEN;BURNS, JR, JOHN L.;EMORY, SCOTT;GRAY, RICHARD W.;LENTINE, FRANK M.