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United States of America Patent
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Sep 25, 2001
Grant Date -
N/A
app pub date -
Feb 23, 2000
filing date -
Mar 17, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A container comprising a flexible semi-permeable composite membrane structure is described, as well as its applications. The membrane has a low molecular weight cut-off, comprises a flexible support layer thick enough to give strength to the membrane structure and having a relatively high molecular weight cut-off and, on at least one surface of the said support layer, a second layer having a relatively low molecular weight cut-off and is thin enough to allow a workable flux. Said container may be used for the preparation of rehydrated solute solutions, rehydrated blood or blood substitutes, nutritional solutions, solutions for medical purpose or of pure water.
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