Compressed gas containers must be separated based on what criteria?

The correct choice focuses on the class of the contents within the compressed gas containers. This classification is critical because different gas classes pose varying levels of risks and hazards. For instance, flammable, corrosive, and non-flammable gases have distinct properties that can significantly affect how containers should be stored and handled. By separating containers based on the class of their contents, it helps ensure safety protocols are maintained, mitigates the potential for dangerous reactions, and aids in effective emergency response strategies.

In practice, this means that containers holding flammable gases, such as acetylene or propane, should be kept away from those containing oxidizers, such as oxygen, to prevent potential hazards like explosions or toxic releases. Proper separation according to the class of contents is essential for maintaining a safe environment in facilities dealing with compressed gases.