The electrical conductivity of H2TiF6 (1) + HF (2) + H2O (3) mixtures was measured in a wide range of mass fractions (0% < w(1) < 55% and 0% < w(2) < 11%) and temperature (15 degreesC < t < 35 degreesC) by means of an automatic system based on the "electrodeless conductivity" technique. The results were fitted to a polynomial equation in w(1), w(2), and t using a Mathematica package (Tkondu). The resulting model is able to reproduce experimental data with an uncertainty below 5%.