What is the best practice for securing gas cylinders in the lab?

Securing gas cylinders with straps or chains is crucial for laboratory safety because it prevents them from tipping over, which could lead to dangerous situations such as leaks or explosions. Gas cylinders are often heavy and under high pressure, making them hazardous if they fall. By using appropriate securing mechanisms, such as straps or chains, the cylinders are stabilized, reducing the risk of accidents during normal lab activities or emergencies.

This approach aligns with standard safety guidelines that emphasize the importance of managing hazardous materials responsibly. Options that involve leaving cylinders unsecured or storing them in a locked cabinet do not address the immediate risks associated with moving or handling gas cylinders in a lab environment. Similarly, placing them on the floor without any support is not advisable, as this significantly increases the risk of accidental falls or injuries. Thus, using straps or chains is the best practice to ensure a safe working environment.