PSAI Trimix Level 1

This course provides the training required to competently and safely utilise breathing gases containing helium for dives that require staged decompression, utilising nitrox and/or oxygen mixtures during decompression to a maximum depth of 60 metres in conditions similar to or better than the assessment conditions.

Course out line:

  • Determine the appropriate trimix gas for planned dives
  • Determine appropriate diving equipment for planned trimix dives
  • Plan dives based in established limits and cautions for trimix gases
  • Analyse and verify trimix gases for diving


  • Minimum of 18 years old at the time of the course
  • PSAI nitrox 40% qualification or equivalent
  • A minimum of 50 logged dives and at least 10 of them between 27 metres to 40 metres