AFFF foams (film forming) provide to their aqueous solutions a particular set of properties that make them ideal for extinguishing hydrocarbon fires. If the surface tension of the aqueous solution and the interfacial tension is lower than the surface tension of the hydrocarbon, a aqueous film layer will be created on top, so it avoids the evaporation and prevents the contact with oxygen, therefore extinguishing the fire in a fast and secure way. All our AFFFs are formulated with C6 Technology (NO PFOS), using high quality C6 fluorosurfactants.