The concentrates covered by this specification are intended for use in land-based foam delivery systems and equipment such as firefighting trucks or foam sprinkler systems for extinguishing liquid fuel fires such as gasoline or aviation fuels. The concentrates covered by this specification are not tested to assess their adequacy for suppressing fuel in depth scenarios. The firefighting capabilities may be degraded if used on hydrocarbon fuels with alcohol additives. These concentrates are intended for use in equipment capable of proportioning at 3 percent by volume with fresh water. The foam generated by this equipment is intended to quickly extinguish liquid fuel fires, which is especially important where personnel and ordnance are in close proximity to a fire. The fire performance of foam concentrates is evaluated to this specification based on testing with air-aspirated nozzles. End users procuring foam concentrate for use in foam systems with non-air-aspirated nozzles should consult with the appropriate authority having jurisdiction and the foam manufacturer to ensure suitability for their application. For fixed systems, the discharge devices and proportioning systems should be listed for use with the foam concentrate where required.