What does LEL/LFL stand for in laboratory safety?

LEL/LFL stands for Lower Explosive Limit/Lower Flammable Limit, which refers specifically to the minimum concentration of a flammable gas or vapor in the air that can ignite and support combustion. Understanding this concept is crucial in laboratory safety as it helps assess the risks associated with the use of flammable substances. If the concentration of the gas is below the lower limit, it will not ignite; therefore, ensuring that levels are monitored and controlled is vital for maintaining a safe working environment.

While options discussing standardization of fuel use, limits of explosive and flammable gases in a broader sense, or thresholds for toxic gas exposure might touch on relevant safety concerns, they do not specifically define LEL/LFL. Knowledge of the exact definition and implications of LEL/LFL allows laboratory personnel to recognize safe operating conditions and implement proper safety measures when handling flammable gases.