Examples

Examples of the criteria for the mixture of flammable materials (gas) towards air in such a way that an explosion can occur are: 

Typical concentration of gases in the air where an explosion can appear (% of gas in air): 

LEL

Explosion

UEL

Methane

4,4%

16,5%

Propane

1,7%

10,6%

Butane

1,4%

9,3%

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