Dear Jack
        I think a project on sterile vs. clean bottles,  and comparison of rate of
"going  bad" of both breastmilk and formula would be interesting.  Maybe
she could get a lab to check samples every 24-48 hrs.  I think I've read
that breastmilk may actually last longer at room temp. than if refrigerated
due to better preservation of WBC's--this would be a good and easy one to
study as well.
                                        All the Best,
                                Paula Conning, BScN,IBCLC
                                Orangeville, Ontario