Carbon Dioxide has been used as an extinguishant in fixed installations since the beginning of the twentieth century, Carbon Dioxide is a colourless, odourless, dry, inert gas and is one of the most Wellknown of all fire extinguishants. The standard size cylinders used for the system is 67.5 L steel cylinders filled with 5 Kg of Carbon Dioxide. Cylinders can be delivered in accordance with the requirements of the various national authorities, including required stamping and certificates