What does a visual inspection sticker on an enriched air cylinder indicate?

A visual inspection sticker on an enriched air cylinder signifies that the cylinder has undergone a thorough inspection for safety. This inspection process typically includes checking for dents, corrosion, and general integrity of the cylinder, ensuring that it meets safety standards before it is used for diving. An inspected cylinder is essential for maintaining a safe diving environment, as it helps to prevent accidents related to equipment failure.

Other options are less accurate: while a cylinder may be ready for use and could avoid restrictions, the visual inspection sticker specifically denotes the condition of the cylinder following a safety inspection. It does not indicate the type of gas, so it would not confirm if the cylinder contains regular air or pure oxygen; these aspects would need to be verified through labeling or additional documents. Therefore, the presence of the visual inspection sticker guarantees that the cylinder has met safety inspection criteria rather than indicating gas contents or unrestricted use.