1) In medical science : The pH values of urine and blood are taken for diagnosis of various diseases.
2) In dairies : Milk has pH of 6.6. A change in the pH of milk indicates that milk has turned sour.
3) In agriculture : For better growth of crops the pH of the soil is regularly tested.
For examples :
1. Citrus fruits require slightly alkaline soil.
2. Rice requires acidic medium.
3. Sugarcane requires neutral soil.
4) In technology: Organic and biochemical reactions are carried out under control pH.
