How long does a Liquide model protective breathing equipment provide breathable air?

• A. 5 minutes
• B. 30 minutes
• C. 15 minutes
• D. 60 minutes

Answer: (C)

Protective breathing equipment provides a limited, self-contained air supply to keep you breathing in smoke or hazardous air long enough to reach safety. The Liquide model is designed to supply breathable air for about 15 minutes. This duration comes from the fixed amount of oxygen-generating material inside the unit and how the hood delivers the air, giving you a workable window to locate an exit and evacuate. Shorter times wouldn’t reliably cover the evacuation process, while longer times aren’t typical for this model and would add unnecessary weight and cost. In training, you rely on roughly 15 minutes of air to complete the evacuation.