Fashewar Shenhai-Hujja
Wuraren haske daban-daban suna buƙatar takamaiman buƙatu kamar hana ƙura, damp-proof, juriya na lalata, kariyar fashewa, da hana ruwa. Duk da haka, Ba kowane fitilar haske ba ne zai iya haɗa duk waɗannan fasalulluka a lokaci guda. Na'urorin walƙiya waɗanda suka haɗa aƙalla uku daga cikin waɗannan fasalulluka na kariya ana kiransu da su “fitilu masu kariya da yawa.” Hakanan akwai bambance-bambancen da aka tsara musamman don ɗaukar bututu masu kyalli madaidaiciya, aka sani da “fitilu masu kariya da yawa.”
Mai hana ƙura:
A wasu wurare na musamman inda ake buƙatar tsarkakewa mara ƙura, dole ne fitulun fitilu su kasance masu ƙura don hana kamuwa da cuta.
Datti-hujja:
A cikin wuraren haske tare da zafi mai yawa, kayan aiki suna buƙatar zama daskararru don guje wa lalacewar abubuwan lantarki na fitilu.
Mai jure lalata:
A wurare kamar tsire-tsire masu sinadarai inda iska ta ƙunshi matakan acidic da alkaline mafi girma, fitilu dole ne su kasance masu jure lalata don jure wa waɗannan munanan yanayi.
Tabbatar da fashewa:
A wurare kamar sito, inda akwai yiwuwar hadarin m da abubuwan fashewa, fitilu dole ne su zama hujjar fashewa don kawar da duk wani haɗari na ƙonewa.
Mai hana ruwa ruwa:
Don wuraren haske na waje, wanda sau da yawa ana fuskantar ruwan sama, kayan aikin hasken wuta suna buƙatar zama hana ruwa don jimre abubuwa.