SEARCH Articles Figures Tables Drinking Water Standards In the United States Indoor Air Quality Standards In the United States National Institute of Standards and Technology not subject to copyright in the United States opyright Outdoor Air Quality Standards In the United States SI Units and the Standard-State Pressure Standard Oil Co (United States) Standard state Standardized units United States Biodegradation Standards United States Military Standards United States National Bureau Standards United States National Institute of Standards and United States Pharmacopeia Standards United States Pharmacopeia reference standards United States Pharmacopeia standards development United States of America Standard Units standard