2230.     MCMILLAN, W. G., AND TELLER, E.  Assumptions of the Brunauer, Emmett, and Teller Theory.  Jour. Phys. and Colloid Chem., vol. 55, 1951, pp. 17-21.  Chem. Abs., vol. 45, 1951, p. 3220.

        An adsorption-isotherm equation valid in the region of multilayer adsorption is obtained, which takes into account both the effect of surface tension of the adsorbate and the effect of the extension of the adsorbent attractive forces beyond the 1^st adsorbed layer.  The differences between this derived equation and one of identical functional form obtained earlier are usually negligible numerically.