What is a common characteristic of a Nitrox gas fill log?

A Nitrox gas fill log is a crucial document that helps divers ensure their gas mixtures are accurate and safe for their planned dives. The common characteristic of a Nitrox gas fill log is that it records the type of blend and the signature of the recipient. This is important because different dive plans require specific gas blends, typically with varying percentages of oxygen and nitrogen. By documenting the type of gas blend used, the log helps maintain safety standards and accountability, allowing divers and technicians to verify that the correct mixtures are being utilized.

Moreover, having the recipient's signature on the log serves as a form of acknowledgment, confirming that the diver has received the correct gas mix and understands its implications for their dive. This practice is fundamental in ensuring safety, particularly in more complex dives where oxygen exposure and the risk of nitrogen narcosis must be carefully managed. While other details may be useful for divers, such as dive site names or dive logs, they are not the primary focus of the Nitrox gas fill log itself.