Carbon Dioxide (CO2) is an exceptionally versatile gas and is the most widely used in applications requiring inflation, propulsion, evaporative cooling and mechanical energy. The Carbon Dioxide inside CO2 cylinders is in its liquid state, which provides the user with maximum expanded gas yields.

Because of inflation property of Carbon Dioxide it is used for inflation Of abdominal cavity while doing laparoscopic surgeory. They are grey in colour and are available in many sizes according to its capacity in kilograms. Commonly used sizes are 2 kg, 4.5 kg, 6.8 kg, 18kg, and 22 kg