Effect of Degassing on the Electrical Conductivity of Pure Water and Potassium Chloride Solutions

Recently, a significantly higher value was reported for the conductivity of pure water, in the absence of dissolved gases. These initial observations have been repeated in this study but with an improved experimental system, giving more accurate results than those reported in the initial experiments. Also reported here are measurements of the conductivity of pure water as a function of temperature and the extent of dissolved gas removal. In addition to the pure water studies, the effect of dissolved gas on the conductivity of dilute potassium chloride salt solutions was also examined.