Patt:

 sometime ago Joan Fisher shared that she was haveing problems with
polyethelene bags. HMB (human milk bank) cautions that titres of secretory
IGA and E.Coli polysaccarides decrease by as much as 60%. further she shared
that when the playtex company was queried they indicated that storage was for
2 weeks only in their bags.

   there was a discussion also re mother's milk lipid content also affecting
storage....net result was to reccomend using glass bottles...

                     patricia