Surface Area Measurements

Samples are outgassed under vacuum or inert gas purge, usually at some elevated temperature. If your samples are heat or light sensitive, do not worry, just let us know and we will take appropriate care. The surface area is measured by nitrogen adsorption or, in the case of very low surface areas (say less than 1m² total available area), by krypton adsorption, both at liquid nitrogen temperature.


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Analysis Types

06000-1N
Single Point BET With Nitrogen.

Single-point BET specific surface area (P/Po = 0.3) by nitrogen adsorption at 77K. Dynamic flow method unless otherwise requested. Requires minimum 1m² surface area. Customer provides outgassing (preparation) temperature.

06000-3N
Multi-Point BET With Nitrogen.

Multi-point BET specific surface area by nitrogen adsorption at 77K (minimum 3 data points). Vacuum/volumetric method. Includes single-point BET value at P/Po = 0.3. Report includes both graphical and tabular multi-point result with BET C constant and correlation coefficient. Requires minimum 1m² surface area. Customer provides outgassing (preparation) temperature.

06000-1K
Single-point BET with Krypton.

Single-point BET specific surface area (P/Po = 0.3) by krypton adsorption at 77K. Vacuum/volumetric method unless otherwise requested. For surface areas less than 1m². Customer provides outgassing (preparation) temperature.

06000-3K
Multi-Point BET with Krypton.

Multi-point BET specific surface area by krypton adsorption at 77K (minimum 3 data points). Vacuum/volumetric method. Includes single-point BET value at P/Po = 0.3. Report includes both graphical and tabular multi-point result with BET C constant and correlation coefficient. For surface areas less than 1m². Customer provides outgassing (preparation) temperature.

06000-CB
STSA Carbon Black Surface Area.

External surface area of carbon blacks by nitrogen adsorption at 77K (minimum 3 data points). Vacuum/volumetric method. Includes multi-point BET value and single-point BET value at P/Po = 0.3. Report includes both graphical and tabular STSA & multi-point BET results. Customer provides outgassing (preparation) temperature.

06000-L
Langmuir Surface Area.

Multi-point Langmuir specific surface area by nitrogen adsorption at 77K (minimum 3 data points). Vacuum/volumetric method. Includes multi-point BET value (if appropriate) and single-point BET value at P/Po = 0.3. Customer provides outgassing (preparation) temperature.

06001-T
t-plot Micropore Area.

Micropore surface area and micropore volume by nitrogen adsorption at 77K (minimum 3 data points). Vacuum/volumetric method. Includes multi-point BET value and single-point BET value at P/Po. Report includes both graphical and tabular t-plot & multi-point BET results. Customer provides outgassing (preparation) temperature.

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email:qc.lab@quantachrome.com