What should you always check before using a compressed gas container?

Before using a compressed gas container, it is essential to check the label for contents. The label provides critical information regarding the type of gas contained within the cylinder, its potential hazards, and the proper handling procedures. Knowing the contents helps ensure that the gas is appropriate for the intended application and that the user is aware of any safety precautions necessary to mitigate risks associated with the gas, including flammability, toxicity, or reactivity.

While checking the expiration date can be important for certain gases or specific regulatory requirements, it does not provide the immediate safety information needed to determine the suitability of the gas for a specific task. Weight is generally not used as an indicator for the safety of the gas or its compatibility with the intended use. The color of the cylinder may inform users of the material or the gas type, but it is not a definitive measure and can vary by manufacturer or region, which makes relying on color alone insufficient for ensuring proper use. The label is therefore the most reliable and comprehensive source of information in this context.