Isihluzi sikaMann+Hummel sangaphakathi kwezithuthi sibe yinxalenye yophononongo lweengcali kwiYunivesithi yaseHeidelberg olubonise ukuba isihluzi sinciphisa ukuxinana kwenitrogen dioxide ngaphakathi kwesithuthi ngaphezu kwe-90%.

Ukukhusela abahlali bekhabhinethi kwiigesi ezinobungozi kunye nevumba elibi, i-combifilter iqulethe malunga ne-140 g yekhabhoni esebenzayo kakhulu. Oku kunesakhelo se-porous esigubungela malunga ne-140,000 m² indawo engaphakathi, ethelekiswa nobukhulu bamabala ebhola ekhatywayo angama-20.

Nje ukuba initrogen oxides ibethe ikhabhoni esebenzayo, ezinye ziyaxinga kwi pores kwaye zibhengezwe ngokwasemzimbeni apho. Enye inxalenye isabela ngokufuma emoyeni, ivelisa iasidi ye-nitrous, ekwahlala kwisihluzo. Ukongeza, i-nitrogen dioxide enetyhefu iyancipha ibe yinitrogen monoxide kwi-catalytic reaction. Oku kuthetha ukuba i-Mann+Hummel particle filter inokunciphisa iigesi ezinobungozi kunye nevumba elibi ngaphezu kwe-90% xa kuthelekiswa nesihluzo se-particle eqhelekileyo.

Isihluzi sikwathintela uthuli olucolekileyo kwaye izihluzi ze-biofunctional zigcina uninzi lwezinto ezimelene nazo kunye ne-virus ye-aerosols ngelixa ukugquma okukhethekileyo kuthintela ukukhula kwebhaktheriya kunye nokungunda.