A gas generator is a device for generating gas. A gas generator may create gas by a chemical reaction or from a solid or liquid source, when storing a pressurized gas is undesirable or impractical.
Gas generator is the practical alternative to pressurized gas cylinders, dewars or bulk storage of laboratory gas. Traditional sources of gas, for example nitrogen or hydrogen, incur on-going delivery, administrative and rental costs, all of which impact on business revenue or facility budgets.