Electrochemical cells of all types are composed of various electrically conductive materials. The nature and degree of conductivity of the cell can substantially affect the current through the cell, the electric field strengths throughout the cell, and the transport of charged particles from one cell region to another. Thus the phenomenon of conductance is highly relevant to all nonequilibrium electrochemical techniques. For studies that emphasize interfacial behavior, it is helpful to understand the potential fields and ionic transport that occur in the bulk materials adjoining the interfaces. For the study of bulk electrical properties, factors that affect the accuracy and precision of the conductivity measurement determine the limits of usefulness of conductometric detection and determination.