What is an example of a dry agent type extinguisher?

A cartridge-operated dry chemical extinguisher is a prime example of a dry agent type extinguisher because it utilizes a dry chemical agent to suppress fires. These extinguishers generally contain substances such as monoammonium phosphate or sodium bicarbonate, which work by interrupting the chemical reaction of fire. When activated, the dry chemical is expelled under pressure, effectively covering the burning material and forming a barrier between the fuel and the fire's oxygen source.

This type of extinguisher is particularly versatile and can be used on various classes of fires, including Class A (ordinary combustibles), Class B (flammable liquids), and Class C (electrical fires). The effectiveness against multiple fire types makes it a common choice in many environments.

In contrast, the other options listed, such as water mist, AFFF (Aqueous Film-Forming Foam), and foam extinguishers, operate on different principles and use various agents, which do not fall under the category of dry agents. Water mist extinguishers primarily use water in a fine mist form to cool and displace oxygen, while AFFF and foam extinguishers utilize foam agents to suppress flammable liquids by creating a barrier that prevents vapor release. Thus, while they are effective