FM Approved ARK SFFF foam concentrate is part of the industry’s leading FM Approved and/or UL Listed Synthetic Fluorine Free Foam (SFFF) Fixed Foam System for Hydrocarbon and Polar Solvent applications. The concentrate is free from fluorinated surfactants and polymers and available in 6.5-gallon cans, 55-gallon drums, or 265-gallon IBC totes! Low expansion SFFF systems are comprised of various FM Approved and/or UL Listed components to establish a complete package for flammable liquid protection!