The Fundamental Conductivity and Resistivity of Water

    1. Kenneth R. Morashc
    1. a Auburndale, Massachusetts 02466, USA
    2. b Department of Chemistry, University of Massachusetts, Boston, Massachusetts 02125-3399, USA
    3. c Mettler-Toledo Thornton, Incorporated, Bedford, Massachusetts 01730, USA

    Abstract

    The most accurate values to date were determined for conductivity of water from 0-100°C, permitting new determination of high-temperature hydroxide ion equivalent conductance. These values were incorporated into a fundamental water coefficient table including hydroxide and hydrogen ion mobilities, water ionization constant, density, conductivity, and resistivity. The conductivity/resistivity values were measured with a multiple-pass, closed, recirculating flow conductivity system, with improved multiple resistance temperature device measurement, and improved analysis of temperature and impurity effects. An accurate conductivity knowledge is necessary to understand water-limiting processes and to facilitate the analysis of trace ionic impurities in water. © 2004 The Electrochemical Society. All rights reserved.

    Key Words
    • Manuscript received May 25, 2004.
    • Revised manuscript received July 1, 2004.
    • Available electronically November 29, 2004.

    1099-0062/2004/8(1)/E16/4/

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