Wet-chemical extinguishers are designed to combat which class of fire?

Wet-chemical extinguishers are designed to combat which class of fire?

• A. Class A
• B. Class K
• C. Class B
• D. Class C

Answer: (B)

Wet-chemical extinguishers are formulated to fight fires involving cooking oils and fats. They use a potassium acetate-based agent that saponifies fats on contact, turning the oil into a soapy layer that coats and cools the surface. This soapy layer blankets the fuel, separates it from heat and oxygen, and helps prevent reignition. Because this mechanism is specifically designed for cooking-oil fires, these extinguishers are classified for Class K fires. They aren’t the right choice for ordinary combustibles, electrical equipment, or other types of flammable liquids, which require different extinguishing approaches.

Wet-chemical extinguishers are formulated to fight fires involving cooking oils and fats. They use a potassium acetate-based agent that saponifies fats on contact, turning the oil into a soapy layer that coats and cools the surface. This soapy layer blankets the fuel, separates it from heat and oxygen, and helps prevent reignition. Because this mechanism is specifically designed for cooking-oil fires, these extinguishers are classified for Class K fires. They aren’t the right choice for ordinary combustibles, electrical equipment, or other types of flammable liquids, which require different extinguishing approaches.