A2L Refrigerant Safety Certification (ESCO)

The Lower Flammability Limit (LFL) of a refrigerant is defined as the:

Maximum concentration that is safe to breathe. Minimum concentration in air that can ignite and sustain a flame. Temperature at which the refrigerant will auto-ignite. Pressure at which the refrigerant becomes flammable.

Correct Answer:

Minimum concentration in air that can ignite and sustain a flame.

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