1. Definition of milk powder solubility Milk powder solubility refers to the time and required stirring force required for a certain amount of milk powder to completely dissolve in water at a certain temperature. 2. Factors affecting the solubility of milk powder 1. Water temperature: Generally speaking, the higher the water temperature, the faster the milk powder dissolves. But if the water temperature is too high, the nutrients in the milk powder will be destroyed. 2. Stirring force: Proper stirring can speed up the dissolution of milk powder