Equivalent Conductance. The specific conductance of a solution is equal to the reciprocal of the specific resistance of the solution, which in turn, is equal to the resistance across the opposite faces of a 1 cm cube of the solution. The conducting power of all the ions produced by one gram equivalent of a solution, at any particular concentration, may be evaluated by imagining two large parallel electrodes set 1 cm apart and assuming the whole of the solution containing the gram equivalent to be placed between them. The conductance of the resulting system is called the equivalent conductance at the given concentration.

Further Information on this Topic can be found in the books of R.P.W. Scott by following the listed links