How to Donate Breast Milk: Storing Your Milk

Storage is an important part of the process of learning how to donate breast milk.

Tips for storing your pumped milk

  • Milk storage bags are okay, but rigid plastic containers are BEST! The bags sometimes leak and can cause loss of some of the milk fat.
  • The milk bank provides rigid plastic containers to our donors, and all collection sites have them available for you when you drop off your milk.
  • Collect your milk and store it in your freezer until you are ready to drop off the next deposit.
  • Let us know if freezer space is a problem for you – we can help with delivery and storage arrangements.
  • 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 the Milk Bank. But give us a call if you have questions about your milk.
  • 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.
  • Check freezer temperatures regularly in case power outages or door being left open. 

Need more milk storage containers? Let us know.