Problem with not rinsing - milk is sticky and if dried in the valves (both duckbill and flap-style) it can cause milk to back up into the tubing of the pump - even the so-called no-back-up pumps.  I have seen it happen - and its' usually related to sticky valves and sometimes a forceful let-down with lots of milk that overwhelms the valves.   

-----Original Message-----
From: Lactation Information and Discussion [mailto:[log in to unmask]] On Behalf Of Sue Jacoby, IBCLC
Sent: Tuesday, August 04, 2009 10:40 PM
Subject: Re: re pumping room protocol

Dawn suggested that the mother might have more than one set of flanges so that she would not have to wash/dry the first set between pumpings.....but I wonder why there would be a problem reusing the same set, if breastmilk can safely be left "out" for ten hours.......wouldn't it be fine to throw the flanges into a zip lock bag and use them again later in that same day? 
Rinsed or not?  (I was in charge of a corporate lactation room for a number of years and that is what I advised.)

The other thing I thought was important was, since we had more than one pumping station in our lactation room, to make it clear that there were "two
seats- no waiting...."   In other words, I wanted mothers to not have to
feel as if they had to wait for the person already in the room to finish- we were on time sensitive breaks- so two at once was to be expected and no one was going to get to have the room "all to themselves."

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