Perimeter Solutions Solberg Fire-Brake 3150A Foam Concentrate 20 Litre Pail. Solberg Fire-Brake 3150A Class A Foam Concentrate is a synthetic firefighting foam concentrate specially designed to be used for wildland, structural and other Class A fuel fires. SOLBERG Fire-Brake 3150A Class A foam concentrate has the ability to reduce the surface tension of water, which substantially increases water’s overall wetting capability. This creates a faster penetration and greater fire control when attacking combustible Class A fuels. SOLBERG Fire-Brake 3150A Class A foam concentrate can be proportioned at the rate of 0.1 - 1% in fresh, sea and brackish water.