4 ms·We buy lactose free milk because it lasts much longerby derwiki 3y agoWe buy lactose free milk because it lasts much longeraccount42 3y agoHow long do your need to store your milk? Regular UHT milk is already good for months.derwiki 3y agoInteresting. Our regular milk would turn sour after maybe 3-4 weeks. Maybe it was something else making it turn.