Wet chemical fire extinguishers (Class K) The potassium acetate–based agent discharges as a fine mist, which forms a soapy foam that suppresses any vapors and steam, reducing the risk of re ...

In the U.S., there are five classifications of fire extinguishers. The last two—D and K extinguishers—are typically used in factories and commercial kitchens, respectively. We’ll focus on ...