The material of the filter is high molecular polyethylene and utilizes the adhesiveness through the polymer properties. In CIS type separator, CIS Type Separator is operated by lipophilic physical properties that attract various oils and physical properties using specific gravity of water, SS, and oil.

When the maximum adsorption power is exerted when the porosity between the filters is about 50 to 60% due to the adhesion and precipitation of oil components and suspended matter using the adhesion and gravity of the filter, various oils passing through the filter layer are collected and Oil droplets that have been adsorbed and enlarged are rapidly floated by the buoyancy action.

In addition, for the same reason, the suspended matter with a large specific gravity adsorbed on the filter sinks down though the filter by the action of gravity, and it shows excellent performance and quality in the removal of non-point pollutants and oil-water separation.