Follow the instructions as shown in the pages for precise use when preparing infant formula. Improper preparation or storage of the prepared bottle over a longer period of time can lead to health problems, e.g. due to the growth of unwanted germs. Prepare formula before every feeding and feed immediately. Do not reuse the remains of the prepared formula's. Clean bottle, teat and ring thoroughly. Close the opened bag tightly after use. Store dry and at room temperature and use within 3 weeks after opening. Do not heat food in the microwave (risk of scalding).