Distilled water can be bought in drugstores and large supermarkets. Distilled water is water that has gone through a distillation and condensation operation, and is called redistilled water if it has been distilled twice, and triple distilled water if it has been distilled three times. Low oxygen consumption water, adding potassium permanganate with acid. Industrial distilled water is obtained by distillation. Distillation is a thermodynamic separation process, it is the use of mixed liquids or liquid-solid system of different boiling points of the components, so that the low-boiling component of the evaporation, and then condensation to separate the whole component of the unit operation process, is the evaporation and condensation of the two unit operation of the joint.

Distilled water can be bought in drugstores and large supermarkets. Distilled water is water that has undergone distillation and condensation operations, and the one that is distilled twice is called redistilled water, and the one that is distilled three times is called triple distilled water. Low oxygen consumption water, adding potassium permanganate with acid. Industrial distilled water is obtained by distillation. Distillation is a thermodynamic separation process, it is the use of mixed liquids or liquid-solid system of the boiling point of each component is different, so that the low-boiling component evaporation, and then condensation to separate the whole component of the unit operation process, is the evaporation and condensation of the two unit operation of the joint. Compared with other means of separation, such as extraction, filtration crystallization, etc., it has the advantage of not needing to use other solvents other than the system components, thus ensuring that no new impurities will be introduced.