Gases in diving

Deco theory – Chapter

More than just air: Nitrox as a Deco gas and Trimix

This chapter covers Deco gases and how they change the dive. We’ll also look at the role helium plays in diving and how Deco changes with Trimix.

  • Oxygen and its limits
  • Nitrox as a magic gas in Deco
  • Helium: solution or a new problem?
  • Gas density, END, and other practical limits

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