What is the proper way to store compressed gas cylinders?

The proper way to store compressed gas cylinders is to secure them by chaining or belting them to a wall or bench, with the cap or pressure regulator on. This method ensures that the cylinders are stable and reduces the risk of tipping over, which can lead to dangerous situations if the cylinder were to be punctured or damaged. Keeping the cap or pressure regulator on protects the valve and helps to prevent accidental leaks.

Additionally, proper securing minimizes the chance of a cylinder becoming a projectile if it were to fall over or be struck by something else, addressing safety concerns in a laboratory setting where such hazards are present. It's also important to follow regulations and guidelines related to the storage and handling of compressed gases, which emphasize stability and safety as critical concerns.

In contrast, storing cylinders in a secure cabinet, while appropriate in some contexts, would not allow for easy access and may not provide the necessary stability. Storing them in a cool, dry place outside may expose them to environmental factors that could affect the performance of the gas or cylinder materials. Keeping cylinders underneath a laboratory bench is not advisable, as this does not ensure they remain upright and stable, and it can create a safety hazard.