Inert Gas

A gas used to fill the head space in a tank (the area above the oil) to stop the chance of explosion or fire (Normally washed exhaust gases) An inert gas is a non-reactive gas used during chemical synthesis, chemical analysis, or preservation of reactive materials. Inert gases are selected for specific settings for which they are functionally inert since the cost of the gas and the cost of purifying the gas are usually a consideration.