The design and operation of a simple volumetric adsorption apparatus

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Abstract
A volumetric apparatus which can be used for the determination of gas adsorption isotherms is described. The principle features of the apparatus are a constant volume doser and a transducer for pressure measurements. The pressure transducer, activated by a high stability constant voltage supply unit, measures pressure in the range 0-101.3 kNm-2 absolute, corresponding to a linear output of -2 to 26 mV.