A unique, all-metal, volumetric gas adsorption system has been described. This device was capable of facilitating precise and semiautomatic measurements which could be used to produce complete adsorption isotherms. Isotherm temperatures could be controlled and maintained at the boiling point of liquid nitrogen, argon, and oxygen. In addition, relatively high-pressure adsorption isotherms could be measured due to the all-metal construction of the adsorption system.