In most cases, parents brew milk powder for children, the applied water temperature is kept at about 40 degrees Celsius. If the applied water temperature is too low it will cause inadequate brewing, and too cold will cause discomfort in the child’s gastrointestinal tract, causing symptoms such as abdominal pain, vomiting, and even diarrhea. If the brewing water temperature is too high will cause scalding in children, too high a temperature will destroy the beneficial ingredients in children’s milk powder and will cause the loss of nutrients in the milk powder. To sum up, when brewing milk powder for children, keep the water temperature at about 40 degrees Celsius is fine, if parents are not able to subjectively feel the exact temperature, you can buy a fixed temperature milk warmer.