Electric surface area meter

G - Physics – 01 – N

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G01N 27/42 (2006.01) G01N 15/08 (2006.01) G01N 30/00 (2006.01)

Patent

CA 1036538

AN ELECTRIC SURFACE AREA METER ABSTRACT OF THE DISCLOSURE An electrical method for determining the surface area of particles is disclosed. A solid electrolyte galvanic cell is used to measure the oxygen that is lost from an oxygen-inert gas mixture by physical adsorption on the sam- ple at a low temperature. A direct readout in terms of surface area is obtained. The method is fast, reliable, requires no calibration and is easily automated.

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