Isihlukanisi sebhethri le-fibreglass siwukuhlukaniswa phakathi komzimba webhethri ne-electrolyte, okudlala indima yokuhlukaniswa, ukuqhuba futhi kwandise amandla ebhethri. Isihlukanisi sebhethri asikwazi nje ukuthuthukisa ukusebenza kwebhethri, kodwa futhi sithuthukise ukusebenza kokuphepha kwebhethri, ukuqinisekisa ukusebenza okuzinzile kwebhethri. Izinto zokuhlukanisa ikakhulukazi yi-fiberglass, ubukhulu bayo ngokuvamile bungu-0.18mm kuya ku-0.25mm. Isihlukanisi sebhethri le-fibreglass njengengxenye ebalulekile yebhethri, sidlala indima ebalulekile ebhethrini. Izinhlobo ezahlukene zezihlukanisi zebhethri zinezinzuzo nezinkinga zazo futhi zifanele izimo ezahlukene zohlelo lokusebenza. Ukukhetha izinto ezifanele zesihlukanisi sebhethri le-fiberglass akugcini nje ngokuthuthukisa ukusebenza kwebhethri, kodwa futhi kunciphisa amathuba okulimala kwebhethri, ngaleyo ndlela kwandisa impilo yesevisi kanye nokuphepha kwebhethri.