tech specialists



technical diving in phuket


TDI Trimix Diver Course

courses > technical > tdi trimix

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 60msw. 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.Gas mixes are not to have less than 18% of oxygen in the mix.


Minimum age of 18.
Advanced Nitrox certified.
Decompression Procedures certified.
Proof of 100 logged dives.

Details of the course

The Trimix diver 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

currency converter TELTX

Additional costs

Technical Rental equipment if needed. set p/day
Helium fills p/liter
Purchase of spool, SMB and wriste slate
TDI Trimix Manual. 1500.00 THB
TDI certification fees 1500.00 THB

Equipment requirement

The 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.