Question 1

How much extra bottom time does Nitrox give you?

Accepted Answer

Nitrox significantly extends your No-Decompression Limit (NDL) by replacing nitrogen with oxygen. For example, at 30 meters (100 ft), using EANx32 can nearly double your bottom time compared to air (approx. 30 mins vs. 55 mins), depending on the dive table or computer algorithm used.

Question 2

What is the Maximum Operating Depth (MOD) for Nitrox 32?

Accepted Answer

The Maximum Operating Depth for Nitrox 32% (EAN32) is 33 meters (111 feet) when adhering to the standard safety limit of 1.4 ATM partial pressure of oxygen ($PPO_2$). Exceeding this depth increases the risk of Central Nervous System (CNS) oxygen toxicity, which can lead to convulsions underwater.

Question 3

Does Nitrox allow you to dive deeper than air?

Accepted Answer

No, Nitrox does not allow you to dive deeper; in fact, it limits your maximum depth due to oxygen toxicity risks. Nitrox is designed to let you stay longer at shallow-to-medium depths (15m–35m) by reducing nitrogen loading, not to extend your depth range.

Question 4

What is the "Best Mix" for a scuba dive?

Accepted Answer

The "Best Mix" is the Nitrox blend that maximizes your oxygen percentage (and therefore your bottom time) without exceeding the PPO2 limit (usually 1.4) at your planned maximum depth. Our calculator allows you to input your target depth to instantly find the optimal oxygen percentage for that specific profile.

Nitrox calculator: NDL (No-Decompression Limit) and MOD (Maximum Operating Depth)

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