What type of hand-held fire extinguisher is used for grease fires?

The K-Guard fire extinguisher is specifically designed for kitchen fires, particularly those involving combustible cooking oils and greases. These types of fires, categorized as Class K fires, require special extinguishing agents that can effectively smother the flames and prevent re-ignition. The K-Guard extinguisher uses a wet chemical agent that interacts with the fats and oils in cooking, creating a barrier that cools the surface while also inhibiting further combustion. This makes it the ideal choice for grease fires, as traditional extinguishers like water can spread the flames and exacerbate the situation.

The other types of extinguishers listed do not effectively handle grease fires. For example, an A-B-C extinguisher is versatile for ordinary combustibles, flammable liquids, and electrical fires but is not suitable for kitchen grease fires specifically. A water extinguisher, as its name suggests, is only effective for Class A fires involving ordinary combustibles and could make a grease fire worse. Foam extinguishers can be effective on flammable liquids but do not have the specific properties needed to tackle cooking oil fires like a K-Guard. Thus, choosing the appropriate extinguisher for the type of fire is crucial for safety and effective fire suppression.