This is the instructor level certification course for instructors wishing to teach the mixed gas closed circuit rebreather course. The objective of this course is to train instructors to teach mixed gas rebreather diving and to develop technical rebreather diving skills appropriate to diving to a maximum depth of 60 metres / 200 feet or the maximum depth set by the manufacturer of the specific unit, using trimix with 16 percent oxygen (O2) or greater. This course is manufacturer specific. Units include Inspiration/Evolution, KISS, Optima, Megalodon, rEvo, Ouroboros, Titian, Pelagian and the Sentinel.
Some of the subject areas are:


  • Electronic Systems Design and Maintenance
  • Gas Physiology
  • Demonstrate a complete systems check and rebreather configuration
  • Properly execute the break down and maintenance of rebreather

Upon successful completion of this course, graduates may teach the TDI Mixed Gas Closed Circuit Rebreather course not to exceed the manufacturers designed depth maximum of 60 metres / 200 feet with mixed gas diluent.