Meta-phosphoric acid is a colorless, glass-like material that we obtain from a European manufacturer and supply several different industries. Food analytics use meta-phosphoric acid to determine vitamins. The biochemistry uses the compound to precipitate protein in biological liquids such as blood and urine. In the veterinary field, meta-phosphoric acid can be used to determine urea in cattle blood. The pharmaceutical industry also uses meta-phosphoric acid as an additive in the production of diagnostic test strips.