2022BS ISO 9277:2022 Determination of the specific surface area of solids by gas adsorption. BET method
2010BS ISO 9277:2010 Determination of the specific surface area of solids by gas adsorption. BET method
1996BS 4359-1:1996 Determination of the specific surface area of powders. BET method of gas adsorption for solids (including porous materials)
BS ISO 9277:2010 Determination of the specific surface area of solids by gas adsorption. BET method has been changed from BS 4359-1:1996 Determination of the specific surface area of powders. BET method of gas adsorption for solids (including porous materials).