The inaimitsidwa mpira padding zakuthupi ndi mtundu wa inaimitsidwa padding zakuthupi popanda matope mpumulo, amene ndi mankhwala atsopano opangidwa pa maziko a zinthu zambiri zinyalala mankhwala padding zipangizo.
Spherical suspension filler, yomwe imadziwikanso kuti porous rotating spherical suspension filler, ndiye mndandanda waposachedwa kwambiri wazinthu zomwe zapangidwa kuti zithetsere madzi oyipa m'nyumba komanso matekinoloje amankhwala a biofilm.Ili ndi mawonekedwe athunthu atatu-dimensional mumankhwala am'madzi am'madzi am'madzi, ali ndi malo enieni enieni, amayikidwa mwachindunji, safunikira kukhazikitsidwa, ndi yosavuta kupachika filimu, ndipo samatsekedwa.