TDI Trimix Diver
Are you looking to expand your depth range? Do you want to reduce narcosis during deep dives? The TDI Trimix Diver Course could be your next step!

The TDI Trimix course provides the training required to competently and safely utilize breathing gases containing helium for dives that require staged decompression, utilizing nitrox and / or oxygen mixtures during decompression to a maximum depth of 60 meters / 200 feet. The objective of this course is to train divers in the benefits, hazards and proper procedures of utilizing custom oxygen / helium / nitrogen mixtures as breathing gases. Gas mixes are not to have any less than 18 percent oxygen (O₂).
For full course information please visit TDI website:
Maximum 2 participants
4 Open Water Dives
Max. Depth: 60 m
Theory exam: Yes
COURSE DETAILS
Who this course is for:
- The certified Advanced Nitrox and Decompression Procedures diver looking to:
- Extend their depth range
- Reduce narcosis for all deep dives
- Advance their technical diving education
Course prerequisites:
- Minimum age 18
- Minimum certification of TDI Advanced Nitrox AND Decompression Procedures Diver, or equivalent
- Proof of 100 logged dives
What’s in it for you?
- Ability to conduct technical diving activities using custom trimix mixtures without direct supervision provided:
- The diving activities approximate those of training
- The areas of activities approximate those of training
- Environmental conditions approximate those of training
- Ability to enroll in TDI Advanced Wreck and TDI Advanced Trimix courses
TDI Trimix Diver minimum certification requirements:
- Satisfactorily complete the TDI Trimix Diver course written examination
- Complete all open water requirements safely and efficiently
- Demonstrate mature, sound judgment concerning dive planning and execution