Hasken gani na bututun ƙarfe na bakin ƙarfe bayan an gama shi yana ƙayyade ingancin bututun ƙarfe. Akwai abubuwa da yawa da ke shafar hasken, amma galibi a cikin waɗannan abubuwa biyar:

1. Ko ya kai yanayin zafin da ake buƙata, ko kuma ya kai yanayin zafin da ake buƙata. Maganin zafi na bakin ƙarfe gabaɗaya ana ɗaukar maganin zafi, kuma ana kiransa da "annealing", kewayon zafin jiki na 1050 ~ 1100 DEG C. Kuna iya gani ta hanyar ramin lura na tanderun murhu, zai kasance yankin zubar da ruwa na bututun bakin ƙarfe, amma babu wurare masu laushi.

2. Yanayi mai hana iska. Gabaɗaya ana amfani da tsantsar hydrogen a matsayin yanayin hana iska, yanayin mafi kyawun tsarki ya fi kashi 99.99%, idan yanayi wani ɓangare ne na iskar gas mara aiki, tsarkin kuma yana iya zama ƙasa kaɗan, amma ba zai iya ɗauke da iskar oxygen da yawa ba, tururin ruwa.

3. Rufe jikin murhu. Ya kamata a rufe murhun mai haske, a ware shi daga iskar waje; ta amfani da hydrogen a matsayin iskar kariya, ana haɗa hanyar fita ɗaya kawai (ana amfani da ita don kunna fitar da hydrogen). Ana iya amfani da hanyar dubawa ta amfani da goge ruwan sabulu a cikin murhun annealing na kowane haɗin gwiwa, don ganin ko iskar gas mai gudana; ɗaya daga cikin wuraren iskar gas mafi sauƙin aiki shine bututun annealing da bututun fitarwa zuwa wurin da ake zaune, zoben rufewa na wannan wurin yana da sauƙin sawa, ya kamata koyaushe a duba canjin da ake samu akai-akai.

4. Kariyar matsin lamba na iskar gas. Domin hana fitowar ƙananan ɓuɓɓuga, kariyar tanderun gas ya kamata ta kasance mai kyau, idan kariyar iskar hydrogen ce, gabaɗaya tana buƙatar fiye da 20kBar.

5. Tururin ruwa na murhu. A gefe guda don duba ko jikin busar da murhu na kayan, murhu da aka fara sanyawa, kayan jikin murhu dole ne su bushe; biyun sune ko ruwan da ya wuce kima ya shiga cikin murhun bututun bakin karfe, bututu na musamman a sama idan akwai ramuka, kada ya zube, ko kuma yanayin murhun ya lalace gaba ɗaya.