. What is the difference between carbon dioxide Fire extinguisher and foam type fire extinguisher? ​

Carbon dioxide extinguishers do not leave any residue, unlike a foam extinguisher. They can also be used on Class B fires, those involving flammable liquids such paraffin or petrol. CO2 extinguishers work by smothering the fire and cutting off the supply of air. Carbon Dioxide Extinguishers (CO2) have a black label

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Unlike a foam fire extinguisher, carbon dioxide fire extinguishers do not leave any residue; you can use them on things such as flammable liquids, petrol, and oils, as well as electrical apparatus such as laptops and phone chargers. On the other hand, foam extinguishers can also extinguish flammable liquids, petrol, and oils, as well as wood, paper, plastics, and soft furnishings.