Caroline asked for new guidelines from LLLI regarding milk storage. The new, revised edition of THE BREASTFEEDING ANSWERBOOK has this on page 212 - "At room temperature - Term colostrum * at 80.6 to 89.6 dgrees F (27 to 32 degrees C) - 12 hours (Nwankwo 1988) Mature Milk * at 60 degrees F (15 degrees C) - 24 hours (Hamosh 1996) * at 66 to 72 degrees F (19-22 degrees C) - 10 hours (Barger and Bull 1987) * at 79 degrees F (25 degrees C) - 4 to 6 hours (Hamosh 1996, Pittard 1985) "In a refrigerator Mature milk * at 32 to 39 degrees F (0 to 4 degrees C) - 8 days (Pardou 1994) "In a freezer *in a freezer compartment located inside a refrigerator - 2 weeks " in a self-contained freezer unit of a refriegerator - 3 or 4 months (temperature varies because the door opens and closes frequently) * in a separate deep freeze at a constant 0 degrees F (-19 degrees C) - 6 months or longer." Hope this helps! Warmly, Sheila Angalet LLL-NJ