Known for their versatility and effectiveness, fulfill a vital function in maintaining fire safety. These extinguishers utilise a foam-based extinguishing substance, commonly referred to as aqueous film forming foam (AFFF), to combat fires, making them especially effective against Class A and B fires that involve flammable liquids and solids. https://www.thesafetycentre.co.uk/fire-products/fire-extinguishers-and-fire-blankets/foam-fire-extinguishers-thomas-glover