Wet Chemical extinguishers are the best restaurant kitchen appliance hand portable fire extinguishers you can purchase. Each model has been tested and approved for the Class K listing by Ul specifically for restaurant kitchen hazards. They contain a special potassium acetate-based agent. The recent trend to more efficient cooking appliances and use of vegetable-based cooking oils dictates the use of a hand portable fire extinguisher with greater firefighting capacity and cooling effect to combat these very hot and difficult fires. The superior firefighting capability of the Wet Chemical agent is placed exactly where you aim it with no chemical residue to clean up. For Use on Class A (ordinary combustibles) and Class K (kitchen hazard fires).