Sulfomolybdic Reagent R3

Sulphomolybdic reagent R3.

Dissolve with heating 2.5 g of ammonium molybdate in 20 mL of water. Dilute 28 mL of sulfuric acid in 50 mL of water, then cool. Mix the two solutions and dilute to 100 mL with water.

Store in a polyethylene container.