Check Whānau Āwhina Plunket's chart on how to store expressed milk
It is best to express directly into a sterilised plastic container, or you can store your breastmilk in a clean, closed container or a special breastmilk storage bag.
It’s a good idea to store the milk in small amounts. Covered ice cube trays are good because they're easily thawed. Make sure you label it with the date it was expressed, and label it as expressed milk so it’s not mistaken for anything else!
Milk storage guidelines



See the Whānau Āwhina Plunket website for more information on expressing breastmilk. You'll find information on expressing milk by hand, hand-held pump and electric pump. You can learn more about how to store and use expressed breastmilk.
Acknowledgements
Reproduced from Whānau Āwhina Plunket's page on expressing breastmilk.
References
Milk storage guidelines from Plunket Whānau Āwhina.