In order to qualify for a license, a gym teacher must have a minimum of a bachelor's degree and pass competency examinations covering both general education and topics pertaining to their area of specialty. After a teacher is licensed, they must also meet continuing education requirements set by their state.
Mistake #3: Keeping mixed formula out too long. Formula that is sitting out at room temperature must be thrown away after 1 hour. If it is in the refrigerator, pre-mixed formula (also called ready-to-feed formula) that is opened must be thrown out after 48 hours. Formula that you mixed must be thrown out after 24 hours. Mistake #4: Re-using leftover formula.
It's good for longer then an hour. They say that in the back of the directions because they want u to use more formula. It can be good for up to 3 hours. But if ur not sure then what I use is a formula jug and only poor what I think my little guy is going to eat. The formula jug in the fridge is good for 24 hours. I love it. Also making it a head of time brings down the bubbles in the formula.