Mugihe ububiko butose cyangwa 'ingese yera' bidakunze kubangamira ubushobozi bwo kurinda igipfundikizo, ni indwara yuburanga bworoshye kwirinda.

Ikibabi kibitse kiboneka mugihe ibikoresho bishya byashizwemo nubushuhe nkimvura, ikime cyangwa ubukonje (ubuhehere bwinshi), kandi bikaguma ahantu hafite umwuka muke hejuru yubuso.Ibi bintu birashobora guhindura uburyo patina ikingira.

Mubisanzwe, zinc ikora mbere na ogisijeni ikora okiside ya zinc, hanyuma hamwe nubushyuhe bwo gukora hydroxide ya zinc.Hamwe n'umwuka mwiza, hydroxide ya zinc noneho ihinduka karubone ya zinc kugirango itange inzitizi kuri zinc, bityo igabanye umuvuduko wa ruswa.Ariko, niba zinc idafite uburyo bwo kubona umwuka utembera kandi igakomeza guhura nubushuhe, hydroxide ya zinc ikomeza gutera imbere aho kugirango ikore ububiko bubitse.

Ingese yera irashobora gukura mugihe cibyumweru cyangwa nijoro mugihe ibintu bimeze neza.Mu bidukikije bikabije ku nkombe, ikibabi kibitse gishobora kandi guturuka kububiko bwumunyu mwuka wubatswe ukurura ubuhehere nijoro.

Ibyuma bimwe na bimwe bya galvanised birashobora guteza imbere ubwoko bwububiko butose buzwi nka 'black spotting', bugaragara nkibibara byijimye cyangwa bidafite ifu yera yizengurutse.Ubu bwoko bwububiko butose buramenyerewe cyane mubyuma bipima urumuri nkimpapuro, purline hamwe nuduce duto duto cyane.Biragoye cyane koza kuruta uburyo busanzwe bwingese zera, kandi rimwe na rimwe ibiboneka bishobora kugaragara nyuma yo gukora isuku.