The use of conductivity measurements enables the determination of the number of
ions in solution. See the following Ref. It is a useful ref and give you idea how to determine numbers of ions in solution: W.J. Geary, Coordination Chemistry Reviews , Volume 7, Issue 1, October 1971, Pages 81-122. Hope this will be useful for you.
The conductivity measurments not useful to determine the ratio of ions in metal complex, but it useful to know the complex nutral or ionic.You can be used the atomic absorbation to determine ions ratio in complexes.