ISO 9277:1995
Determination of the specific surface area of solids by gas adsorption using the BET method

Standard No.

ISO 9277:1995

Release Date

1995

Published By

International Organization for Standardization (ISO)

Status

Withdraw

Replace By

ISO 9277:2010

Latest

ISO 9277:2022

Scope

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.

ISO 9277:1995 history

• 2022 ISO 9277:2022 Determination of the specific surface area of solids by gas adsorption — BET method
• 2010 ISO 9277:2010 Determination of the specific surface area of solids by gas adsorption - BET method
• 1995 ISO 9277:1995 Determination of the specific surface area of solids by gas adsorption using the BET method