Involved in the governance of the American Chemical Society and ASTM International. The American Chemical Society serves more than 157,000 members globally, providing educational and career development programs, products, and services. As the largest scientific society in the world, we are a leading and authoritative source of scientific information. ASTM International is a voluntary consensus standards organization with over 12,000 ASTM standards based on the expertise of over 30,000 members across many fields of expertise across the globe. ASTM standards enhance performance and help everyone have confidence in the things they buy and use – from the toy in a child’s hand to the aircraft overhead.