During a Class K extinguisher discharge, from what distance should you apply the wet chemical?

• A. From above the hood.
• B. From a safe distance.
• C. At close range to the oil surface.
• D. From behind a protective screen.

Answer: (B)

The key idea is safety distance when using a Class K wet chemical extinguisher. Wet chemical works by saponifying fats in cooking oil and forming a soapy, cooling layer on the surface, which smothers the fire and helps prevent re-ignition. To do this effectively and safely, you start from a safe distance so you can apply the agent across the oil surface without being exposed to heat, steam, or potential splatter. Begin by coating the surface from a distance and sweep to spread the layer, then move closer only as needed to finish coverage. Spraying from directly above, at very close range, or from behind a screen isn’t necessary and can increase risk of burns or splashing.