In this paper a tirring stirring U-shaped cell has been proposed and costructed. The new cell has a stable cell constant and can be easily conducted. By using alternating current bridge and the new cell, the molar conductances of LiCl and NaCl in 0-90wt% PrOH aqueous mixtures (interval 10wt% PrOH) have been measured. In terms of Fuos-Onsager conductance equation the limiting molar conductances (Λ。), associated constants and other related micro-parameters have been obtained. According to the experimentally direct or indirect information, the micro-structure, ion solvated situation and ion association degree have been explored and discussed.

Key words: WATER, SODIUM CHLORIDE, ELECTRIC CONDUCTANCE, PROPANOL, MICRO-STRUCTURE, LITHIUM CHLORIDE