TDI · Open Circuit
TDI Trimix Plus Diver
An extended Trimix certification to 75 metres with five dives and a deeper helium range.
The TDI Trimix Plus course trains divers to safely and confidently use breathing gases containing helium for dives that require staged decompression to a maximum depth of 75 metres. It teaches the benefits, hazards and proper procedures for using custom oxygen, helium and nitrogen gas mixes, with all mixes containing at least 16% oxygen.
You develop advanced technical skills including rescue and self-rescue techniques using four tanks. Building on the TDI Trimix Diver course, Trimix Plus offers five dives and an extended depth range, providing a more comprehensive deep technical diving experience and a natural step towards Advanced Trimix.
What you'll learn
- Helium-based decompression diving to a maximum depth of 75 metres
- Custom oxygen, helium and nitrogen mixes with at least 16% oxygen
- Advanced rescue and self-rescue techniques using four tanks
- Extended dive planning over five training dives
Prerequisites
- TDI Advanced Nitrox Diver and TDI Decompression Procedures Diver, or equivalent
- Proof of a minimum of 100 logged dives
What's included
- TDI Trimix Plus certification on completion
- Five training dives with an extended depth range
- Advanced trimix planning theory
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