ʻO wai ka Papa Pahū-Hōʻoia i ʻoi aku ke kiʻekiʻe, BT5 a i ʻole BT4

Manaʻo ʻia ke kiʻekiʻe o ka BT5 explosion-proof rating.

Papa A me Papa	Ka wela wela a me ka hui
-	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	ʻo ʻEtana, Propane, Acetone, Penethyl, Ene, Aminobenzene, Toluene, Benzene, Amonia, Kalapona Monoxide, Ethyl Acetate, Acetic Acid	Butane, Ethanol, Propylene, Butanol, Acetic Acid, Butyl Ester, ʻO Amyl Acetate Acetic Anhydride	Pentane, Hexane, Heptana, Decane, Octane, ʻaila hinu, Hydrogen Sulfide, Cyclohexane, ʻaila hinu, ʻAla ʻaila, Diesel, ʻAla ʻaila	Etera, Acetaldehyde, Trimethylamine		Ethyl Nitrite
IIB	Propylene, Acetylene, Cyclopropane, Kinea umu Coke	Epoxy Z-Alkane, Epoxy Propane, Butadiene, Ethylene	ʻO Dimethyl Etera, ʻO Isoprene, Hydrogen Sulfide	ʻO Diethylether, Dibutyl Etera
IIC	Kaha wai, Hūhāhā	Acetylene			Kalapona Disulfide	Ethyl Nitrate

Ua helu ʻia nā ʻāpana āpau ma ka pae IIB. Eia naʻe, He 135°C ka palena kiʻekiʻe o ka wela o ka ʻili o nā lako T4, ʻoiai ua kaupalena ʻia nā mea hana T5 i 100°C. ʻOi aku ka palekana o ka ʻilikai haʻahaʻa. Pela, ʻO nā mea hana e pili ana i nā kūlana BT5 ua kūpono pū me BT4, aka, aole pili ka hope.