Scuba diving Maximum Operating Depth (MOD) table

The Maximum Operating Depth (MOD) represents the deepest depth at which a particular breathing gas mixture can be safely used without exceeding recommended partial pressure limits of oxygen. This is critical for diver safety as breathing gases at excessive depths can lead to oxygen toxicity, potentially causing seizures underwater.

Oxygen %MOD (PpO2 1.4)MOD (PpO2 1.6)
21%57 mt66 mt
22%54 mt63 mt
23%51 mt60 mt
24%48 mt57 mt
25%46 mt54 mt
26%44 mt52 mt
27%42 mt49 mt
28%40 mt47 mt
29%38 mt45 mt
30%37 mt43 mt
31%35 mt42 mt
32%34 mt40 mt
33%32 mt38 mt
34%31 mt37 mt
35%30 mt36 mt
36%29 mt34 mt
37%28 mt33 mt
38%27 mt32 mt
39%26 mt31 mt
40%25 mt30 mt

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