Definition
Foam Fire Extinguisher
A foam fire extinguisher is a portable firefighting device that discharges AFFF (aqueous film-forming foam) to smother fires by forming a vapour-suppressing barrier and cooling the burning material. Effective on Class A (solid combustibles) and Class B (flammable liquids) fires, it is identified by a cream label panel and must be serviced annually under BS 5306-3.
