Umehluko Phakathi Kwezinga B Lobufakazi Bokuqhuma kanye no-C

Ikilasi C linikeza ukuphepha okuthuthukisiwe ngokwelashwa okucophelela okungaqhumi.

Iqembu lokushisa lemishini kagesi	Izinga lokushisa eliphezulu elivumelekile lempahla kagesi (℃)	Izinga lokushisa legesi/umhwamuko (℃)	Amazinga okushisa edivayisi asebenzayo
T1	450	＞450	T1~T6
T2	300	＞300	T2~T6
T3	200	＞200	T3~T6
T4	135	＞135	T4~T6
T5	100	＞100	T5~T6
T6	85	＞85	T6

Imiklamo ye-flameproof ngokuvamile ihlanganisa ukuthungatha kunezingxenye ezifakekayo. Amadivayisi Ekilasi C ahlinzeka ngezindawo ezinde ezingashi kanye nezikhala eziqhumayo ezinciphile. I-hydrogen, i-acetylene, kanye ne-carbon disulfide idinga ukusetshenziswa kwekilasi le-IIC, kuyilapho ezinye izinto zinikezwa ngokwenele isigaba se-IIB.