Determination of the specific surface area of solids by gas adsorption - BET method (ISO 9277: 2010)
Project begin
2010-10-27
Planned document number
DIN ISO 9277
Abstract
The project specifies the determination of the total specific external and internal surface area of disperse or porous solids by measuring the amount of physically adsorbed gas according to the method of Brunauer, Emmett and Teller (BET method). The BET method is applicable only to adsorption isotherms of type II and type IV. The BET method cannot reliably be applied to type I isotherms or to solids which adsorb the measuring gas.
Responsible Committee
NA 005-11-43 AA Partikelmesstechnik; Porositäts- und Oberflächenmessverfahren (SpA zu ISO/TC 24/SC 4/WG 3)
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