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RS ISO 9277: 2022
Determination of the specific surface area of solids by gas adsorption — BET method
Abstract

This document specifies the determination of the overall specific external and internal surface area of
either disperse (e.g. nano-powders) or porous, solids by measuring the amount of physically adsorbed
gas according to the method of Brunauer, Emmett and Teller method,[1] based on the 2015 International
Union for Pure and Applied Chemistry (IUPAC) recommendations[3].
NOTE For solids exhibiting a chemically heterogeneous surface, for example, metal-carrying catalyst, the
BET method gives the overall surface area, whereas the metallic portion of the surface area can be measured by
chemisorption methods.

General Information

CodeClassificationThemePagesPublisherAvailability
RS ISO 9277: 2022ADOPTED ISO STANDARDSChemical technology31Third Edition
Jul 2026		Available
Price: RWF 33,000


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