What should be done with caps on gas cylinders when storing them?

When storing gas cylinders, it is essential to keep the caps on the cylinder. The caps serve a critical safety function by protecting the cylinder’s valve from damage and preventing the accidental release of gas. They act as a physical barrier that can help contain gas leaks and mitigate the risks associated with handling pressurized gases.

Additionally, having the caps on the cylinders during storage helps maintain the integrity of the cylinder itself and ensures that the valves are not exposed to dirt, debris, or moisture, which could lead to malfunction or hazards during future use. This safety measure is widely recognized as standard practice within lab and industrial settings for handling compressed gases.