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TDI Trimix Instructor Course

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Course Overview

This course provides training required to compentently and safely teach breathing gases containing helium with no less than 18% of oxygen for dives that require stage decompression to a maximum depth of 60msw.


Minimum age of 21.
Advanced Nitrox Instructor certified.
Decompression Procedures Instructor certified.
Proof of 250 logged dives out of which 20 must be logged out of training and 10 within the last 12 monthes.

Details of the course

The Trimix instructor course covers:

  • Physics
  • Physiology
  • Decompression options
  • Equipment consideration
  • Dive tables & dive computers
  • Dive planning
  • Procedures

Course duration and number of dives

The Trimix diver course is a 3 day course and 4 dives are required.

Course Price

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Additional costs

Technical Rental equipment if needed. set p/day
Helium fills p/liter
TDI Extended Range & Entry Level Trimix Instructor Manual
TDI Advanced Trimix Diver Manual
TDI Standards & Procedures Instructor Manual
TDI Evaluation forms

Equipment requirement

The Trimix Instructor course has some specific equipment required for this course on top of the standard gear. All students must own or purchase a spool, SMB and wrist slate. The oxygen clean regulators can be purchased or rented. We supply the double tank, decompression tanks, mixes and the oxygen and helium analyser.

Got something to ask us ?

We are Technical diving education professionals and over the years we have been asked almost everything, feel free to look at our most commonly asked technical diving questions or contact us directly.