Types of Foam:
Alcohol-Resistant Foam Concentrate: A concentrate used for fighting fires on water-soluble materials and other fuels destructive to regular, AFFF, or FFFP foams, as well as for fires involving hydrocarbons.
Aqueous Film-Forming Foam Concentrate (AFFF): A concentrate based on fluorinated surfactants plus foam stabilizers to produce a fluid aqueous film for suppressing hydrocarbon fuel vapors and usually diluted with water to a 1 percent, 3 percent, or 6 percent solution.
Film-Forming Fluoroprotein Foam Concentrate (FFFP): A protein-foam concentrate that uses fluorinated surfactants to produce a fluid aqueous film for suppressing hydrocarbon fuel vapors.
Film-Forming Foam: A concentrate that when mixed at its nominal use concentration will form an aqueous film on hydrocarbon fuels. The hydrocarbon fuel typically used as a minimum benchmark for film formation is cyclohexane.
Fluoroprotein Foam Concentrate: A concentrate very similar to protein-foam concentrate but with a synthetic fluorinated surfactant additive.
Medium and High Expansion Foam Concentrate: A concentrate, usually derived from hydrocarbon surfactants, used in specially designed equipment to produce foams having foam-to-solution volume ratios of 20:1 to approximately 1000:1.
Protein Foam Concentrate: Concentrate consisting primarily of products from a protein hydrolysate, plus stabilizing additives and inhibitors to protect against freezing, to prevent corrosion of equipment and containers, to resist bacterial decomposition, to control viscosity, and to otherwise ensure readiness for use under emergency conditions.
Synthetic Foam Concentrate: Concentrate based on foaming agents other than hydrolyzed proteins and including aqueous film-forming foam (AFFF) concentrates, medium- and high-expansion foam concentrates, and other synthetic foam concentrates.
Other Synthetic Foam Concentrate: A concentrate based on hydrocarbon surface active agents and listed as a wetting agent, foaming agent, or both.