title: Revisions of the 1963 semidine HC1 standard method for inorganic phosphorus.
mesh_terms: D001322:Autoanalysis; D008722:Methods; D010655:Phenylenediamines; D010710:Phosphates / Q000032:analysis*; D013053:Spectrophotometry
chemical_list: D010655:Phenylenediamines; D010710:Phosphates; C031506:4-aminodiphenylamine