Can non-flammable gases be mixed in the same cylinder?

The reasoning behind the assertion that non-flammable gases cannot be mixed in the same cylinder primarily revolves around safety and chemical compatibility. While non-flammable gases may not ignite or burn, mixing different gases can still lead to dangerous chemical reactions that could produce harmful byproducts or increase pressure due to gas interactions.

Additionally, different gases can have varying physical and chemical properties, such as reactivity or solubility, which can result in unexpected outcomes when combined in a confined space like a cylinder. Therefore, it is crucial to avoid mixing gases unless there is verified compatibility, even if none of the gases involved are flammable. This view underscores the importance of adhering to safety protocols in handling compressed gases to prevent accidents in various settings, including industrial and laboratory environments.