title: Letter: A stable stock arsenic pentoxide reagent for use in preparing diacetyl monoxime reagent for a urea nitrogen procedure.
mesh_terms: D001152:Arsenicals; D001806:Blood Urea Nitrogen; D006801:Humans; D007202:Indicators and Reagents; D008722:Methods; D010091:Oximes
chemical_list: D001152:Arsenicals; D007202:Indicators and Reagents; D010091:Oximes