Class K extinguishers are designed for which scenario?

• A. For any kitchen fires; use per label instructions and avoid non-oil fires or outside kitchen
• B. For outdoor non-commercial kitchens
• C. For commercial kitchen oil fires; avoid non-oil fires or outside kitchen
• D. Electrical fires only

Answer: (C)

Class K extinguishers are built for fires involving cooking oils and fats in professional kitchens. They deliver a wet chemical agent (potassium acetate) that saponifies fats, turning the oil into a soapy layer that cools and smothers the flames, which is especially effective for high-temperature oil fires found in commercial kitchens like restaurants or cafeterias. This special agent and approach are not suited for non-oil fires, fires outside a kitchen, or electrical fires, so the best match is a fire scenario in a commercial kitchen involving oil.