Volumetric Nitrogen Adsorption  


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Brunauer–Emmett–Teller (BET) theory is commonly used to model the physical adsorption of gas molecules on a solid surface. It uses gas/vapour adsorption data to calculate a specific surface area value, typically expressed in units of area per mass of sample (m2/g).  The technique is referenced by several standard organisations such as ISO, USP and ASTM.

Nitrogen is the most commonly employed gas-phase adsorbate for probing surface area and porosity values, along with other less common probing adsorbates such as Argon and Krypton. By preconditioning/outgassing the sample to remove any physisorbed impurities, this process generates the most accurate and repeatable results possible.

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Applications & properties measured with Volumetric Nitrogen Adsorption 



Food and Beverage




Building Materials

Personal Care



Aerospace & Automotive

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