ʻO ka hui pū ʻana o Mann + Hummel no nā kaʻa i loko o ke kaʻa he ʻāpana o nā haʻawina kula kūikawā ma ke Kulanui o Heidelberg i hōʻike ʻia e hoʻemi ka huila hui i ka neʻe o ka nitrogen dioxide i loko o ka kaʻa ma mua o 90%.

No ka pale ʻana i ka poʻe e noho ana i ka hale mai nā kinoea ʻino a me nā mea ʻala maikaʻi ʻole, loaʻa i ka combifilter ma kahi o 140 g o ke kalapona hoʻoikaika ikaika loa. He porous kēia e uhi ana ma kahi o 140,000 m² o ka ʻili o loko, e like me ka nui o 20 mau kahua pōpeku.

I ka wā e pā ai nā nitrogen oxides i ke kalapona i hoʻōla ʻia, paʻa kekahi i loko o nā pores a hoʻopili kino ʻia ma laila. Hoʻopili kekahi ʻāpana me ka haʻahaʻa i ka lewa, e hana ana i ka waikawa nitrous, e waiho pū ana i loko o ka kānana. Eia kekahi, ua hoʻemi ʻia ka nitrogen dioxide i ka naikokene monoxide ma kahi hopena catalytic. 'O ia ho'i, hiki i ka Mann+Hummel particle kānana ke ho'emi i nā kinoea 'ino a me nā mea 'ala maika'i 'ole ma mua o 90% i ka ho'ohālikelike 'ia me ka kānana ma'amau.

Hoʻopaʻa pū ka combifilter i ka lepo maikaʻi a mālama nā kānana biofunctional i ka hapa nui o nā allergens a me nā aerosol virus aʻo ka uhi kūikawā e pale ai i ka ulu ʻana o ka bacteria a me ka poʻi.