Kusiyana Pakati pa Miyezo Yophulika-Umboni IIB ndi IIC

Zida zoteteza kuphulika mkati mwa Gulu II zimagawidwa m'magulu: Gawo IIA, Gawo IIB, ndi Class IIC. Mavotiwa amatsata utsogoleri wawo: IIC > IIB > IIA.

Condition Category	Gasi Gulu	Woimira mpweya	Minimum Ignition Spark Energy
Pansi pa Mgodi	Ine	Methane	0.280mJ
Mafakitole Kunja Kwa Mgodi	IIA	Propane	0.180mJ
	IIB	Ethylene	0.060mJ
	IIC	haidrojeni	0.019mJ

Zowunikira gasi zomwe zidavotera IIC zomwe sizingaphulike ndizoyenera mipweya yonse yoyaka moto; komabe, Zowunikira za IIB zimalephera kuzindikira H2 (haidrojeni), C2H2 (acetylene), ndi CS2 (carbon disulfide), zomwe zili mgulu la IIC.