What should you do if you suspect your tank's Nitrox mix is incorrect?

When you suspect that your tank's Nitrox mix may be incorrect, the safest and most prudent action is to analyze the tank contents before diving. This is critical because relying on an assumed or inaccurate Nitrox mix can introduce serious risks to your dive, including the potential for oxygen toxicity or insufficient oxygen levels.

Analyzing the tank ensures that you know the precise composition of the gas you will be using, which allows you to plan your dive appropriately, including adjustments to your depth and bottom time based on the mix. This measurement provides the necessary data to verify that the Nitrox mix aligns with your dive plan and training, helping to ensure your safety underwater.

Diving with caution may offer some level of mitigation but doesn't address the fundamental issue of knowing what's in your tank. Proceeding as normal could lead to dangerous consequences if the mix is indeed incorrect. Using a different tank could be a consideration if it was immediately available, but again, this does not help clarify the mix of your original tank unless it has also been analyzed. Thus, the best practice is to validate the tank's contents before proceeding with your dive.