Ndeipi Kuputika-Chiratidzo Chinhanho Chiri Pamusoro, BT5 kana BT4

Iyo BT5 kuputika-chiratidzo chiyero inoonekwa seyakakwira.

Kirasi Uye Level	Ignition Temperature Uye Boka
-	T1	T2	T3	T4	T5	T6
-	T＞450	450≥T＞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, peturu, Hydrogen sulfide, Cyclohexane, peturu, Parafini, Diesel, Petroleum	Ether, Acetaldehyde, Trimethylamine		Ethyl Nitrite
IIB	Propylene, Acetylene, Cyclopropane, Coke Oven Gasi	Epoxy Z-Alkane, Epoxy Propane, Butadiene, Ethylene	Dimethyl Ether, Isoprene, Hydrogen sulfide	Diethylether, Dibutyl Ether
IIC	Gasi remvura, Hydrogen	Acetylene			Carbon Disulfide	Ethyl nitrate

Ese mayuniti akatemerwa paIIB level. Zvisinei, T4 midziyo ine tembiricha yepamusoro yepamusoro inosvika 135°C, nepo T5 michina inogumira ku100°C. Kudzikira kwepamusoro tembiricha yepasi kunoratidza kuchengetedzwa kwakanyanya. Saka, midziyo inoenderana neBT5 zviyero zvakare inoenderana neBT4, asi zvakadzokera kumashure hazvishande.