A Co2 Fire Extinguisher is most commonly used for Class B flammable liquid fires, including petrol, and fires involving sensitive electrical equipment – because Co2 Fire Extinguishers contain no water and leave no residue.
Carbon dioxide is a non-conductive and non-corrosive gas used to reduce the amount of oxygen available to the fire. Carbon dioxide is extracted from the atmosphere and stored at high pressure in the liquid state within a fire extinguisher.