{HEAD ~ The activated membrane} can be made of a polysulfone/polyacrolein mixture or a polysulfone microporous membrane treated with {TAIL ~ a polyacrolein solution} 
{ HEAD ~ The activated membrane } can be made of a polysulfone / polyacrolein mixture or a polysulfone microporous membrane treated with { TAIL ~ a polyacrolein solution }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL