Colombo CO2 Reactor Kit 2.3LMake CO2 yourself with 2 components. No more changing pressure bottles. The Colombo CO2 reactor is a very complete set to easily make CO2 yourself using two components. Instead of exchanging pressure bottles, the bottle with the 2 components can easily be refilled with pure CO2 gas. The bottle is made of stainless steel 314. Included are, among other things, bottle holder, pressure regulator, solenoid valve, bubble counter, non return valve, air