CO₂-based fire extinguishers are widely used for combating fires, particularly those involving electrical or electronic equipment, as they do not cause corrosion and are non-conductive. It is a portable active fire protection tool designed to suppress or control small fires during emergencies. It typically contains a dry or wet chemical agent and is not meant for large, uncontrollable fires, such as those that have spread to the ceiling, pose significant hazards to the user (e.g., lack of an escape route, heavy smoke, or explosion risk), or require the specialised equipment, personnel, and expertise of a fire department. Most fire extinguishers are handheld cylindrical pressure vessels filled with a fire-suppressing agent, although less common variants with non-cylindrical designs also exist.
Internal structure of fire extinguisher
