Gas adsorption is widely used for characterization of clays. Apart from “classical” experiment of nitrogen orother gases adsorption/desorption at cryogenic temperatures, allowing the determination of the specific surfacearea, partial mesopore and micropore volume and size distributions, gas adsorption can also be used for thecharacterization of clay surface texture (energetic heterogeneity) related to layered structure of clays. DerivativeIsotherm Summation applied to high-resolution gas adsorption isotherms was shown to be a powerful tool toaccess energetic characteristics and ratio between basal and lateral faces of clay particles. To date, the method isnot commonly employed for characterization of clays and other heterogeneous solids, probably due to specificityof high-resolution isotherms acquisition technique described in the original literature: quasi-equilibrium volumetry with gas injection by microleak. We illustrated in the present work a possibility to use widely availablestatic manometric commercial gas adsorption analysers for this purpose