Table 2. Impact of CO, C₂H₆, or H₂ Addition on the Explosive Limits of CH₄.

		explosive limits of CH4
flammable gas	added concentration/%	LEL/%	UEL/%
CO	0.5	5.05	15.25
	1.0	4.95	14.95
	2.0	4.75	14.45
	3.0	4.25	13.95
C2H6	0.5	4.55	14.35
	1.0	3.95	13.45
	1.5	3.25	12.75
	2.0	2.25	12.15
H2	0.5	4.75	15.85
	1.0	4.15	15.55
	1.5	3.55	15.25
	2.0	2.85	15.05