Carbon Dioxide CO2 Extinguishers are suitable for Class B risks involving flammable liquids and for electrical hazards. CO2 is harmless to electrical equipment and is ideal for modern offices, electronic risks, and fires caused by the combustion of liquids such as: oils, fats, solvents etc. The 5 kg size has a 70 B fire rating.   Class B Safe for Flammable liquids, Live electrical equipment   Not safe for wood, paper, textiles. Not to be used within confined spaces