How often are oxygen cylinders required to be tested?

Oxygen cylinders are required to be tested every 10 years to ensure their safety and integrity for storing high-pressure gases. This testing is crucial as it helps to identify any potential defects or weaknesses in the cylinder that could lead to leaks or failures, which might pose serious safety hazards during use. Regular inspection and testing routines are part of adhering to safety standards established by regulatory agencies, such as the Department of Transportation (DOT) in the United States. These intervals are designed to protect both the users and the environment from the risks associated with high-pressure gas containment.