How many gallons of AFFF are in a portable extinguisher?

The correct choice indicating that a portable Aqueous Film-Forming Foam (AFFF) extinguisher contains 2 1/2 gallons is based on standard specifications for these types of firefighting equipment. Portable AFFF extinguishers are designed to effectively combat flammable liquid fires, and their capacity is typically optimized for balancing weight and usability for the operator.

AFFF extinguishers aim to provide sufficient firefighting foam to cover the surface of burning liquids and prevent the release of flammable vapors. The amount of 2 1/2 gallons is a common configuration that allows for effective deployment while still being portable enough for personnel usage in emergencies.

Other values for portable extinguishers, like 1 gallon, 3 gallons, and 4 gallons, do not align with the standard specifications for AFFF portable units. Understanding these capacities is crucial for personnel in damage control to make informed decisions in fire suppression situations.