Perimeter Solutions Phos Chek 1% A/B Fluorine Free 200 Litre Drum. The first certified fluorine free Class A/B firefighting foam, PHOS-CHEK^® 1% Fluorine-free foam concentrate is a mixture of water and hydrocarbon surfactants. Developed for use on Class B hydrocarbon fuel fires, this organohalogen free foam is an environmentally responsible next generation product, that demonstrates Perimeter Solutions’ commitment to superior firefighting performance and environmental responsibility.

Class A/B foam can be used in multiple applications ranging from structural and residential fires; wildland fires; general facilities protection; Class A hazards (ordinary combustible materials such as wood, cloth, paper, rubber, and many plastics); Class B hazards that are not fuel in depth; (e.g. vehicle fires) and foam training exercises.