Only qualified testing laboratories should be permitted to conduct the analysis. The AR-AFFF liquids are allowed if USCG approved for the vessel. Inc. It may appear an easy process to select a fire fighting foam liquid to protect a given hazardous fuel. Acknowledge and understand the listing restraints, warranty and shelf life and environmental concerns. The selection of foam liquid begins with identifying the hazard - hydrocarbon or polar solvent.
Hydrocarbons are generally crude oil, gasoline, naptha, fuel oil, hexane, etc.
Polar solvent examples are acetones, ketones, esters, and amines. The listing will affect all aspects of the foam products being assembled for the purpose. It must be recognized that all foam liquids are not created equal. Their MUTs varies affecting viscosity and proportioning bearing heavily on foam generation. An excellent listing reference is the UL Fire Protection Equipment Directory.