How long can I leave newly prepared formula or opened formula at room temperature?
A. After formula is prepared it should be used or refrigerated as soon as possible. Newly prepared bottles of formula should be discarded if left out at room temperature for longer than 30 minutes. Any remaining liquid concentrate or ready-to-feed formula left in the can should be kept in the can, covered with aluminum foil or plastic wrap.
After formula is prepared it should be used or refrigerated as soon as possible. Newly prepared bottles of formula should be discarded if left out at room temperature for longer than 1 hour. Any remaining liquid concentrate or ready-to-feed formula left in the can should be kept in the can, covered with aluminum foil or plastic wrap and stored in refrigerator to be used within 48 hours.