Historical
ASTM C471M-20a Red
Standard Test Methods for Chemical Analysis of Gypsum and Gypsum Products (Metric) (Standard + Redline PDF Bundle)
Content Provider
ASTM International [astm]
Content Provider
ASTM International [astm]
As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.