In Quod genus operandi Tempestas est explosio-Probatur Level Bt4 Used

Classis IIB apta est ad ambitus ubi fiunt explosivae mixturae vaporum IIB et aeris.

Gas group / temperatus group	T1	T2	T3	T4	T5	T6
IIA	Formaldehyde, toluene, yl ester, acetylene, propane, acetone, Donec acidum, benzene, styrene, carbo carbonis, ethyl acetate, Acidum acetic, chlorobenzene, yl acetate, chlorine	Methanol, ethanol, ethylbenzene, propanol, propylene, butanol, butyl acetate, amyl acetate, cyclopentane	Pentane, pentanol, hexane, ethanol, heptane, octane, cyclohexanol, terebinthinae, naphtha, petroleum (inter gasoline), cibus oleum, pentanol tetrachloride	Acetaldehyde, trimethylamine		Ethyl nitrite
IIB	Propylene ester, aether amino	Butadiene, epoxy propane, ethylene	Dimethyl aether, acrolein, hydrogenii carbide
IIC	Hydrogenium, aqua gas	Acetylene			Carbon disulfide	Ethyl nitrate

Explosio-probationis classificationes in primarias gradus ad fodienda et secundaria officinarum gradus scinduntur. In secundo gradu, sub-genus includit IIA, IIB, et IIC, in ascendendo ordo explosio-probandi facultatem: IIA < IIB < IIC. The 'T' category denotes temperatus coetus ". A 'T'’ rating significat quod armorum superficiem temperatura infra 135°C . maintains, cum T6 esse meliorem salutem gradu ", auctor ut humilis superficies temperatus fieri.

Ultimo, Hoc CREPITUS-probationem productum est ut an per se tutum electrica fabrica, ad usum destinatum cum Classis B gasorum ubi superficies temperatus 135°C . non excedit.