Conductivity measurements of distilled water and some electrolytic solution due to the SO2 and CO2 absorption have been performed in the laboratory and on the site. CO2, has been found to cause a decrease in the conductivity of alkaline solutions and an increase in that of CaCO3, and MgCO3, aqueous suspensions. The importance of the direct SO2 absorption was proved to be limited to the zones of extremely high concentrations of this gas in the ambient air.