  We study the effect of enforcing exact conservation of charges in statistical
models of particle production for systems as large as those relevant to
relativistic heavy ion collisions. By using a numerical method developed for
small systems, we have been able to approach the large volume limit keeping the
exact canonical treatment of all relevant charges, namely baryon number,
strangeness and electric charge. Hence, we hereby give the information needed
in a hadron gas model whether the canonical treatment is necessary or not in
actual cases. Comparison between calculations and experimental particle
multiplicities is shown. Also, a discussion on relative strangeness chemical
equilibrium is given.
