Quod CREPITUS-Probatur Level superior, BT5 vel BT4

In BT5 explosio-probatio rating habetur summus.

Classis et Level	Ignitio Temperature et Group
-	T1	T2	T3	T4	T5	T6
-	T＞450	450≥T＞300	300≥T＞200	200≥T＞135	135≥T＞100	100≥T＞85
ego	Methane
IIA	Ethane, Propane, Acetone, Phenethyl, Ene, Aminobenzene, Toluene, Benzene, Ammonia, Carbo carbonis monoxide, Ethyl Acetate, Acidum aceticum	Butane, Ethanol, Propylene, Butanol, Acidum aceticum, Butyl Ester, Amyl aceticum aceticum anhydride	Pentane, Hexane, Heptane, Decanus, Octane, Gasoline, Hydrogenium Sulfide, Cyclohexane, Gasoline, Kerosene, Diesel, Petroleum	Ether, Acetaldehyde, Trimethylamine		Ethyl Nitrite
IIB	Propylene, Acetylene, Cyclopropane, Coke Oven Gas	Epoxy Z-Alkane, Epoxy Propane, Butadiene, Ethylene	Dimethyl Ether, Isoprene, Hydrogenium Sulfide	Diethylether, Dibutyl Ether
IIC	Aqua Gas, Hydrogenium	Acetylene			Carbon Disulfide	Ethyl Nitrate

Omnes unitates æstimantur in IIB level. tamen, T4 apparatu maximam habet superficiem temperatus modum 135°C, cum T5 apparatu limitatur ad C° C. Maximum maximum superficiem temperaturis inferiorem maiorem salutem indicant. Sic, armorum obsequium cum signis BT5 etiam compatitur BT4, Sed contrarium non est.