What color tank is associated with oxygen (O2)?

The tank associated with oxygen (O2) is standardized to be green in color. This color coding is crucial for ensuring safety in medical environments, as it allows healthcare professionals and emergency responders to quickly identify tanks containing oxygen and differentiate them from tanks containing other gases, such as nitrogen or medical air.

Standardizing gas tank colors helps prevent potentially dangerous mix-ups that could arise from using an inappropriate gas for medical procedures. The green color indicates that the contents are safe for use with patients, which is particularly important in emergency situations or critical care settings. This visual recognition system is part of broader safety practices to maintain clarity and reduce the risk of errors in handling medical gases.