I would use a cold sterilising method such as Milton solution. I'm not sure if it is in use as much in the USA as in Australia, but that is how I sterilised everything I wanted to store EBM in when the boys were little. Kirsten Blacker back to lurkdom _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp *********************************************** 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