Wanne Matsayin Tabbacin Fashe Yafi Girma, BT5 ya da BT4

Ana ɗaukar ƙimar tabbacin fashewar BT5 mai girma.

Daraja Da Matsayi	Wutar wuta da Rukuni
-	T1	T2	T3	T4	T5	T6
-	T;450	450≥T sama da 300	300≥T ：200	200≥T：135	135≥T 100	100≥T：85
I	Methane
IIA	Ethane, Propane, Acetone, Phenethyl, Ene, Aminobenzene, Toluene, Benzene, Ammonia, Carbon Monoxide, Ethyl acetate, Acetic acid	Butane, Ethanol, Propylene, Butanol, Acetic acid, Butyl Ester, Amyl acetate acetic anhydride	Pentane, Hexane, Heptane, Decane, Octane, fetur, Hydrogen sulfide, Cyclohexane, fetur, Kerosene, Diesel, Man fetur	Ether, Acetaldehyde, Trimethylamine		Ethyl nitrite
IIB	Propylene, Acetylene, Cyclopropane, Coke Oven Gas	Epoxy Z-Alkane, Epoxy Propane, Butadiene, Ethylene	Dimethyl Ether, Isoprene, Hydrogen sulfide	Diethylether, Dibutyl Ether
IIC	Ruwan Gas, Hydrogen	Acetylene			Carbon Disulfide	Ethyl nitrate

Dukkanin raka'a ana kimanta su a matakin IIB. Duk da haka, Kayan aiki na T4 yana da matsakaicin iyakar zafin jiki na 135°C, alhali kayan aikin T5 sun iyakance zuwa 100 ° C. Ƙananan madaidaicin yanayin zafi na saman yana nuna aminci mafi girma. Don haka, kayan aiki masu dacewa da ka'idojin BT5 kuma sun dace da BT4, amma koma baya aiki.