Fire Extinguisher 28
Fire Extinguisher 28 : Water: Wet Chemical and Water Additives: Wet Chemical (potassium Acetate, Carbonate, or Citrate): Extinguishes the fire by forming a soapy foam blanket over the burning oil and by cooling the oil below its ignition temperature. Generally class A and K (F in Europe) only, although newer models are outfitted with misting nozzles as those used on water mist units to give these extinguishers class B and C firefighting capability. Wetting Agents: Detergent based additives used to break the surface tension of water and improve penetration of Class A fires. Antifreeze: Chemicals added to water to lower its freezing point to about ?40?F. Has no appreciable effect on extinguishing performance
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