Ngwakọta Mann + Hummel maka ime ụgbọ ala abụrụla akụkụ nke ọmụmụ ngalaba ọkachamara na Mahadum Heidelberg nke gosipụtara na combifilter na-ebelata mkpokọta nitrogen dioxide n'ime ime ụgbọ ahụ karịa 90%.

Iji chebe ndị bi n'ime ụlọ pụọ na gas na-emerụ ahụ na isi na-adịghị mma, combifilter nwere ihe dịka 140 g nke carbon na-arụ ọrụ nke ukwuu. Nke a nwere oghere nwere oghere nke na-ekpuchi gburugburu 140,000 m² nke akụkụ elu dị n'ime, ma e jiri ya tụnyere ogige bọọlụ iri abụọ.

Ozugbo nitrogen oxides kụbara carbon arụnyere, ụfọdụ na-arapara n'ime oghere ma na-agbanye ahụ n'ebe ahụ. Akụkụ ọzọ na-emeghachi omume na iru mmiri dị na ikuku, na-emepụta acid nitrous, nke na-anọgidekwa na nzacha. Na mgbakwunye, nitrogen dioxide na-egbu egbu na-ebelata ka ọ bụrụ nitrogen monoxide na mmeghachi omume catalytic. Nke a pụtara na nzacha urughuru Mann + Hummel nwere ike ibelata gas na-emerụ ahụ na isi na-adịghị mma karịa 90% ma e jiri ya tụnyere nzacha urughuru.

Ngwakọta ahụ na-egbochikwa uzuzu dị mma na ihe nzacha biofunctional na-ejigide ọtụtụ ihe allergens na ikuku aerosols ebe mkpuchi pụrụ iche na-egbochi uto nke nje bacteria na ebu.