  We describe an open source software which we have realized and made publicly
available at the website http://jljp.sourceforge.net. It provides the potential
difference and the ion fluxes across a liquid junction between the solutions of
two arbitrary electrolytes. The calculation is made by solving the
Nernst-Planck equations for the stationary state in conditions of local
electrical quasi-neutrality at all points of the junction. The user can
arbitrarily assign the concentrations of the ions in the two solutions, and
also specify the analytical dependence of the diffusion coefficient of each ion
on its concentration.
