if formula your talking about. look on can. breastmilk is a total different ball game and have different rules for every stage of breast milk (already eaten of from, expressed, frozen)

@hisprettymama, thank you

yes it stays good already mix in the fridge for 24 hours it should say on the can also

@alexusasia420, so it won't get bad after an hour? I have the sample bottles but she only drinks half an ounce (she has 1 oz of breastmilk) of the 2 ounces and it's a waste to throw it away :/

yes they have storage bags you can buy to store the milk