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TDI Closed Circuit Rebreather Advanced Mixed Gas Diluent (MOD4) Course

courses > rebreather > tdi closed circuit rebreather advanced mixed gas diluent (mod4)

Course Overview

This is the highest level certification course for divers wishing to utilize the KISS or Evolution/Inspiration closed circuit rebreather for advanced mixed gas diving. The objective of this course is to train divers in the benefits, hazards, and proper procedures for diving Closed Circuit Rebreathers and to develop advanced skills appropriat to technical diving to a maximum depth of 100msw using a mixed gas as a diluent.


Minumum age of 18.
Proof of 100 rebreather hours logged over 100 dives on the specific unit. All dives deeper than 9msw and 50 dives must be deeper than 30msw. If the diver has 100 hours on an other recognised unit, only 50 hours are required on the specific unit.
Closed Circuit Rebreather Mixed Gas Diluent certified.

Details of the course

The Closed Circuit Rebreather MOD4 diver course covers:

  • Physiology
  • Formula work
  • Dive tables & dive computers
  • Dive planning
  • Equipment maintenance
  • Problem solving - Emergency procedures

Course duration and number of dives

The Closed Circuit Rebreather MOD3 diver course is a 5 day course and 7 dives are required.

Course Price

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Additional costs

Rental equipment if needed. set p/day
Purchase of spool, SMB and wriste slate
TDI Closed Circuit Rebreather Manual. 1500.00 THB
TDI Certification. 1500.00 THB

Equipment requirement

The Closed Circuit Rebreather Diver course has no specific equipment requirement more than your standard recreational dive gear. We supply the unit, tanks and mixes, 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.