发明名称 |
Process for evaluating solute retention characteristics of membranes |
摘要 |
A process is provided for rapidly and non-destructively evaluating the solute retention characteristics of porous membranes using a novel liquid-porosimetric technique. A ratio of two membrane permeabilities is measured at preselected operating conditions using a pair of mutually immiscible fluids, one of which is employed as a membrane wetting agent and the other used as an intrusion fluid. At the first operating condition, a particular transmembrane pressure is chosen so as to intrude nearly all of the pores present in the membrane sample. At the second operating condition, a particular membrane permeability is chosen so as to achieve a specified permeability ratio. The resulting transmembrane pressure corresponding to this particular membrane permeability is compared to a previously established standard curve which permits identifying the solute retention characteristics of the porous membrane.
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申请公布号 |
US5457986(A) |
申请公布日期 |
1995.10.17 |
申请号 |
US19940189395 |
申请日期 |
1994.01.28 |
申请人 |
MILLIPORE CORPORATION |
发明人 |
DILEO, ANTHONY J.;PHILLIPS, MICHAEL W. |
分类号 |
B01D65/10;G01N15/08;(IPC1-7):G01N15/08 |
主分类号 |
B01D65/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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