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DSAT Tec Trimix 65 Diver Course

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Course Overview

The Tec Trimix 65 course is the natural continuation of the air tec courses. It builds on the knowledge learned and introduces divers to trimix diving. The Tec 65 course qualifies the successfull student to dive down to 65msw using trimix (min oxygen content 18%), perform gas switching and entering unlimited decompression obligations using nitrox or pure oxygen.


Minimum age of 18.
Advanced Open Water diver certified.
Rescue diver certified.
Tec 50 certified or equivalent.
Proof of 100 logged dives.

Details of the course

The Tec 65 diver course covers:

  • Trimix diving depth ranges
  • Exposure planning
  • Selecting a mix
  • Argon inflation systems
  • Handling three or four decompression cylinders
  • Decompression models
  • Emergency procedures
  • Face masks and multi-gas computers

Course duration and number of dives

The Tec Trimix 65 diver course is a 4 day course and 5 dives are required.

Course Price

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Additional costs

Technical Rental equipment if needed. set p/day
Helium fills 3.00 THB p/liter
Purchase of spool, SMB and wriste slate

Equipment requirement

The Tec 65 Diver course has some specific equipment required for this course on top of the standard technical gear. All students must own or purchase a spool, SMB and wrist slate. We supply the nitrox tanks and mixes, the oxygen clean regulator and the oxygen 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.