Bakin karfe fitilar germicidal
Haifuwa yana nufin amfani da abubuwa masu ƙarfi na jiki da sinadarai don sanya dukkan ƙwayoyin cuta a ciki da wajen kowane abu su rasa ƙarfin haɓakarsu da haɓakawa har abada.Hanyoyin haifuwa da aka fi amfani da su sun haɗa da haifuwar reagent na sinadarai, haifuwar radiation, haifuwar zafi mai bushewa, haifuwar danshi mai ɗanɗano da haifuwar tacewa.Ana iya amfani da hanyoyi daban-daban bisa ga buƙatu daban-daban.Misali, matsakaicin zafi yana haifuwa, kuma iskar tana haifuwa ta hanyar tacewa.
Bakin karfe fitilun germicidal haƙiƙa fitilar mercury ce mara ƙarfi.Fitilar mercury mai ƙarancin matsi tana fitar da hasken ultraviolet ta wurin jin daɗin ƙarancin tururin mercury (<10-2Pa).Akwai manyan layukan da ke fitar da iska guda biyu: daya shine tsayin daka 253.7nm;dayan kuma tsayin zangon ya kai 185nm, duka biyun idanuwa ne tsirara wadanda ba a iya gani da hasken ultraviolet.Fitilar germicidal bakin karfe baya buƙatar canzawa zuwa haske mai gani, kuma tsawon 253.7nm na iya yin tasiri mai kyau na haifuwa.Wannan shi ne saboda sel suna da daidaituwa a cikin nau'ikan raƙuman haske.Ultraviolet haskoki a 250 ~ 270nm suna da babban sha kuma suna tunawa.Hasken ultraviolet a zahiri yana aiki akan kwayoyin halitta na tantanin halitta, wanda shine DNA.Yana taka wani nau'in tasirin actinic.Ƙarfin ultraviolet photon yana shiga cikin nau'i-nau'i na tushe a cikin DNA, yana haifar da kwayoyin halitta su canza, sa kwayoyin cutar su mutu nan da nan ko kuma ba za su iya haifar da 'ya'yansu ba.Don cimma manufar haifuwa.
