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CMAS Advanced Trimix Diver Course

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Course Overview

This course provides training required to compentently and safely utilize breathing gases containing helium for dives that require stage decompression to a maximum depth of 100msw. The objective of this course is to train divers in the benefits, hazards and proper procedures of utilizing custom oxygen, helium and nitrogen mixtures as breathing gases.


Minimum age of 18.
Normoxic Trimix diver certified.
Proof of 20 logged trimix dives.

Details of the course

The Advanced Trimix diver course covers:

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

Course duration and number of dives

The Advanced Trimix diver course is a 4 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
Purchase of spool, SMB and wriste slate

Equipment requirement

The Advanced Trimix Diver course uses technical gear configuration. All students must own or purchase a spool, SMB and wrist slate. We supply the double tanks, decompression tanks and nitrox/oxygen mixes, the decompression regulators 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.