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Multiple Choice

Class K extinguishers are used for which type of fire?

Class K extinguishers are designed for fires involving cooking oils and fats, the combustible cooking media found in commercial kitchens. They use a wet chemical agent that saponifies fats, turning oil into a soapy layer that cools the oil and blankets it, protecting against re-ignition and suppressing the flame. That makes combustible cooking media the best fit for Class K. Fires involving ordinary combustibles like wood or paper belong to a different category and use other extinguishing agents, while fires involving metals require a separate Class D approach. So the kitchen-oil fires are exactly what Class K is built to handle.

Class K extinguishers are designed for fires involving cooking oils and fats, the combustible cooking media found in commercial kitchens. They use a wet chemical agent that saponifies fats, turning oil into a soapy layer that cools the oil and blankets it, protecting against re-ignition and suppressing the flame. That makes combustible cooking media the best fit for Class K. Fires involving ordinary combustibles like wood or paper belong to a different category and use other extinguishing agents, while fires involving metals require a separate Class D approach. So the kitchen-oil fires are exactly what Class K is built to handle.