What are wet chemical extinguishers specifically designed for?

Wet chemical extinguishers are specifically designed to tackle fires involving cooking oils and fats, which are classified as Class F fires. These types of fires occur frequently in kitchen environments where fats or oils, such as in deep fryers, can reach very high temperatures and become flammable.

The mechanism of wet chemical extinguishers involves the discharge of a fine mist that not only cools the burning material but also helps in forming a soap-like layer on the surface of the burning fat or oil. This reaction effectively smothers the fire and prevents re-ignition by cutting off the oxygen supply.

Given the unique characteristics of cooking oil and fat fires, wet chemical extinguishers are specifically formulated with agents that can safely and effectively extinguish these fires without exacerbating the situation. Other types of extinguishers are not suitable for this purpose, which is why it's essential to have the appropriate equipment to handle such kitchen hazards.