Chemguard and Williams Fire & Hazard Control have released the first in their collaborative line of high-performance firefighting foam concentrates.

ThunderStorm F-601B, a 1x3 alcohol-resistant aqueous film-forming foam, and F-603B, a 3x3 AR-AFFF, are suitable for hydrocarbon and polar solvent fires. Formulated from fluorochemical and hydrocarbon surfactants, high-molecular-weight polymers, and solvents, both concentrates offer lower viscosity than other polar-solvent AFFF products.