Standard gas cylinder sizes vary according to the purpose of the gas cylinder, such as the #100 size for propane and the #5 for carbon dioxide. High-pressure oxygen gas cylinders range from 20 CF to 300 CF sizes.
A gas cylinder is a pressurized tank that is used to store gases above atmospheric pressure levels. The contents of the cylinders are constantly under pressure, and individuals should always take care in the handling of any gas cylinders to avoid injuries and damage. Proper ventilation is necessary in the event of a leak, and users should keep all cylinders away from open flames and high heat.