What is the capacity of a Portable AFFF extinguisher in terms of water?

A Portable AFFF (Aqueous Film-Forming Foam) extinguisher has a capacity of 2.5 gallons of liquid, which is the equivalent to its water capacity. This extinguisher is specifically designed for use on flammable liquid fires and works by forming a blanket of foam over the burning material, effectively smothering the flames and preventing re-ignition by cutting off the oxygen supply.

Understanding the capacity of fire extinguishers is crucial for effective firefighting operations, especially in scenarios involving hazardous materials. The 2.5-gallon size strikes a balance between portability and effectiveness, making it manageable for personnel to carry while still providing sufficient fire suppression capability when needed.