This issue of why the PNS cannot be shared has, as far as I know, nothing to do with spillage into the storage compartment. Our medela rep. says it is because there is no filter to protect the motor from contamination. Now, if such a filter is available for the Classic, why not for the PNS? Both have internal motors. I hypothesize that this is a marketing decision. The company doesn't want these pumps shared because that would decrease revenue. I understand that...but, at the same time wonder why a filter cannot be sold to make the PNS share-able. By the way, I am a big promoter of this company's products. I have nothing against them and think they have good products. Just think we have a right to question this...if we are all dealing with it so regularly. Susan *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html