  The Balance Function analysis method was developed in order to study the long
range correlations in pseudo-rapidity of charged particle. The final results on
p+p, C+C, Si+Si and centrality selected Pb+Pb collisions at $\sqrt{s_{NN}} =
17.2$ GeV and the preliminary data at $\sqrt{s_{NN}} = 8.8$ GeV are presented.
The width of the Balance Function decreases with increasing system size and
centrality of the collisions. This could suggest a delayed hadronization
scenario.
