How to guide – Storing Breast Milk


Storing breast milk:

If you are breastfeeding and storing breast milk for later use, below are some helpful tips on bottle feeding your baby.

  1. Wash your hands and nails thoroughly with hot soapy water. Wash and sterilise all the bottle parts including the teats. We recommend the use of breast milk bags for storing breast milk due to their convenience and ease of use and our  Natripur Thermosensor milk bags are designed for this specific purpose. They are compact, pre-sterilised and include a easy to read measuring scale and labelling area.
  2. After expressing breast milk into the bottle, portion breast milk into breast milk storage bags with enough milk in each bag for one feed only. Zip up the breast milk storage bags and label with date and time.
  3. Always keep prepared breast milk in the fridge or freezer if storing for longer periods. The length of breast milk storage time is dependent on where the breast milk is kept.

Room temperature: 3 – 4 hours

Refrigerator: 24 hours only – recommended

Freezer: Up to 3 months

Freezer to fridge: Thawed breast milk can be stored in the refrigerator for up to 24 hours.

To freeze:

For frozen breast milk ensure bags are zipped tight with excess air removed from the bag.  This helps prevent any ice particles forming inside the breast milk bag and creates an air tight seal.  Place in freezer.

To thaw:

To thaw breast milk, please place the breast milk bag in a saucer of warm water and let thaw.  We recommend you use warm water and not hot water as hot water can destroy the antibodies contained in the breast milk.


Breastfeeding has been proven to provide long term health benefits including vital brain development.  The antibodies in breast milk help protect your baby against infection and breast milk helps to reduce the effect of conditions including eczema, asthma and diabetes.

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