ASTM D 6556 - 07 Standard Test Method for Carbon Black - Total and External Surface Area by Nitrogen Adsorption

American Society for Testing and Materials (ASTM). Current edition approved Oct. 1, 2007. Published November 2007. Originally
approved in 2000. Last previous edition approved in 2004 as D 6556 – 04. This test method covers the determination of the total
surface area by the Brunauer, Emmett, and Teller (B.E.T. NSA) theory of multilayer gas adsorption behavior using multipoint
determinations and the external surface area based on the statistical thickness surface area method.