Storing of infant formulae

Should not store in the fridge, else the powder will start to clamp. Normally, less than a month will be finish. My infant is 4 mths old and took him 2 weeks to finish a tin of S26. If you're talking about untouched formula milk then it can be kept in the fridge for up to 24 hrs. If baby has already drink a bit then need to finish within an hour and should throw away if baby does not drink after that period.