What is the depth limit for Nitrox diving?

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Multiple Choice

What is the depth limit for Nitrox diving?

Explanation:
Nitrox depth limits are set to keep the partial pressure of oxygen (PPO2) within a safe range. Because nitrox has a higher oxygen fraction than air, PPO2 increases more quickly with depth, which raises the risk of oxygen toxicity if you go too deep. In recreational nitrox training, a practical depth cap around 140 feet is used to stay within safe PPO2 ceilings for common mixes and to align with standard no-decompression dive planning. Going deeper than this increases the chance of exceeding the safe PPO2, while shallower depths leave you within a comfortable safety margin. So, 140 feet is the commonly taught limit for recreational nitrox diving.

Nitrox depth limits are set to keep the partial pressure of oxygen (PPO2) within a safe range. Because nitrox has a higher oxygen fraction than air, PPO2 increases more quickly with depth, which raises the risk of oxygen toxicity if you go too deep. In recreational nitrox training, a practical depth cap around 140 feet is used to stay within safe PPO2 ceilings for common mixes and to align with standard no-decompression dive planning. Going deeper than this increases the chance of exceeding the safe PPO2, while shallower depths leave you within a comfortable safety margin. So, 140 feet is the commonly taught limit for recreational nitrox diving.

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