The goal of this work was to manufacture and to analyze a passive device performance (inertial collector). This one has worked as an opening for the inside ambient natural airing and also it retains some particulate material present in the air which passes through it. The collector work has been based in the inertia which each particle has, that is, as the air flow enters through the inertial collector opening it is accelerated due to the reduction in the duct transversal section. As these ducts are made with obstacles forcing the flow direction change, the heaviest particles, by their higher inertia have followed in rectilinear path against the obstacle. In order to check the inertial collector yield particulate material samples have been collected in thin filters (to collect particles up to 2.5 micrometer aerodynamic diameter) and in coarse filters (over 2.5 micrometer) set in sequence. These samplings have been performed in and out the test cell with two inertial collectors installed at opposite sides. After the gravimetric analysis of these filters one checked that the inertial collectors have achieved inside the test cell up to 80% reduction of coarse particulate mass and up to 15% of thin particulate mass.