How to: Storing Milk

Storing Pumped Milk for Donation

Proper storage of your pumped breast milk is important in keeping your breast milk safe for donation.

  • Store pumped milk in rigid plastic containers. Milk storage bags are okay, but sometimes leak and cause loss of some of the milk fat. MMBA provides rigid plastic containers to our donors, and all milk depots have them available for you when you drop off your milk. Need more milk storage containers? Let us know.
  • Leave ½ inch at the top of the container for the milk to expand as it freezes.
  • Refrigerate or freeze your milk within 30 minutes of pumping. You may refrigerate your milk for up to 24 hours before freezing.
  • Store milk in your freezer until you are ready to drop off the next deposit. Typically, you may store your milk for three to four months in a freezer, or up to seven months in a deep freeze before delivering it to MMBA. If you have questions about your frozen milk, call us.
  • Let us know if freezer space is a problem for you – we can help with delivery and storage arrangements.
  • Check freezer temperature regularly in case of power outages or door being left open.