Mann+Hummel combifilter don abubuwan hawa cikin abin hawa ya kasance wani ɓangare na binciken ƙwararrun masana a Jami'ar Heidelberg wanda ya nuna cewa combifilter yana rage yawan nitrogen dioxide a cikin motar da fiye da 90%.

Don kare mazauna cikin gida daga iskar gas masu cutarwa da wari mara daɗi, combifilter ya ƙunshi kusan gram 140 na carbon da aka kunna sosai. Wannan yana da tsari mai ƙyalƙyali wanda ya kai kusan mita 140,000² na sararin saman ciki, kwatankwacin girman filayen ƙwallon ƙafa 20.

Da zaran nitrogen oxides ya buge carbon da ke kunnawa, wasu suna makale a cikin ramukan kuma suna daɗaɗa jiki a wurin. Wani sashe yana amsawa tare da zafi a cikin iska, yana samar da nitrous acid, wanda kuma ya kasance a cikin tacewa. Bugu da ƙari, an rage yawan nitrogen dioxide mai guba zuwa nitrogen monoxide a cikin wani abu mai haɗari. Wannan yana nufin tace barbashi na Mann+Hummel na iya rage iskar gas mai cutarwa da wari mara daɗi da fiye da kashi 90% idan aka kwatanta da tacewa na al'ada.

Hakanan combifilter yana toshe ƙura mai kyau kuma masu tacewa na biofunctional suna riƙe da yawancin allergens da iska mai iska yayin da shafi na musamman yana hana haɓakar ƙwayoyin cuta da mold.