Fireguard AFFF 3% Foam Concentrate- 200 ltr Drum is an aqueous film forming foam concentrate (AFFF) consisting of fluorocarbon and hydrocarbon surfactants blended with various solvents, preservatives, and stabilizers. The foam forms an aqueous film that rapidly cuts off the oxygen supply and knocks down the fire.  The expanded foam, from which the film is drained, forms a stable blanket that suppresses the release of flammable vapours and cools down the fuel surface extinguishing the fire and preventing reignition.