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We always get questions about Ratio Deco, and particularly about changes to Ratio Deco 3.0. In this Obscure Questions episode Jeff and Ben are joined by UTD instructor (and technical diver) Martina Carelli. Martina went through the complete Ratio Deco online course and created a list of real-world questions. We answered these, plus a few that came in from other students and podcast listeners.

Check out the episode for answers to questions about surface intervals, oxygen windows, gas density, accuracy of mixes, using nitrox deeper than 4 ATA, using best mix nitrox, dive computers and computer-generated tables, and more.

For access to the complete UTD Ratio Deco online course, click here.

More questions? Other topics for our Obscure Questions podcast? Contact us here.

Also check out our youtube channel: https://www.youtube.com/c/UnifiedTeamDiving