ANN 111: Principles of Animal Nutrition and Feed Technology (2+1)

PRINCIPLE

• Phosphorus is estimated by volumetric method. The phosphorus is converted to phospho-ammonium molybdate, by the addition of the reagent Ammonium molybdate.
• The precipitate is then dissolved in excess of standard alkali. The amount of alkali titrated with the precipitate is indirectly found out by back titrating with standard HCl or HNO₃.