The ____ is the lowest concentration of the substance in air that will burn or explode if ignited.
A) UEL
B) TLV
C) LEL
D) STEL

Question

Quizplus · Accepted Answer

LEL (Lower Explosive Limit) is the lowest concentration of a substance in air that will ignite and burn if an ignition source is present. It is important to know the LEL of a substance to ensure safety in handling and storage. The UEL (Upper Explosive Limit) is the highest concentration of a substance in air that will ignite and burn if an ignition source is present. TLV (Threshold Limit Value) and STEL (Short-Term Exposure Limit) refer to exposure limits of a substance and are not applicable to this question.

The ____ Is the Lowest Concentration of the Substance in Air