Ammonium Molybdate Solution R3

Solution i Dissolve 5 g of ammonium molybdate in 20 mL of water with the aid of heat.

Solution ii Mix 150 mL of ethanol (96%) with 150 mL of water and add, with cooling, 100 mL of sulfuric acid.

Add 80 volumes of solution ii to 20 volumes of solution i immediately before use.