FIELD: analysis of physical and chemical properties of materials and sorption of various entities. SUBSTANCE: method involves measurement of quantity of adsorbent inside analyzed entity (such as diaphragms, catalysts, sorbents, filters, electrodes, rock, soil, fabric, leather, building materials, and the like) by weighing adsorbent and determining its relative equilibrium pressure in sample cell by measuring rate of steam discharge from cell without disturbing quasi-equilibrium state between sample adsorbent and its steam in cell. Adsorbents can be changed within comprehensive range of their steam pressure variation. EFFECT: improved informative capacity of method. 3 dwg, 2 ex
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