On the basis of dimension-regression method, experimental design, using Greco-Latin square, the authors have carried out theoretical studies of the filtration process through the channels facing damage, the formation of which is almost inevitable when the protective coating on top of the device impervious polymeric element. Using factors in dimensionless form, were constructed graphs depicting the results of the experiment, as well as to obtain an equation of the filtration coefficient lining, the adequacy of which is confirmed by the Fisher criterion.

Keywords: experiment planning, impervious lining, filtering, damage, Latin square, dimensionally-regression method