IANTD Recreational Trimix Training

The IANTD Recreational Trimix Diver program provides Sport Divers with a safer breathing medium within the depth limits of sport diving (39 msw/130 fsw), whilst utilising helium to give an Equivalent Narcotic Depth (END) of between 12 and 24 msw (40 and 80 fsw). The diver may elect to dive the ‘mix’ on IANTD Recreational Trimix tables or computers.

The IANTD Recreational Trimix Diver program may be taught as a single course or combined with a variety of IANTD Advanced or Specialty Diver programs. The program qualifies divers to perform no stop dives using Recreational Trimix Gas mixtures within the limits of the existing qualification level to a maximum depth limit of 39 msw (130 fsw).

The program covers all Recreational Trimix gas mixes from 28% to a maximum of 40% oxygen and Helium concentrations yielding an END no greater than 24 msw (80 fsw) emphasizing the use of 30/25 trimix.


  • Must be a qualified Advanced Open Water Diver or equivalent and EANx Diver or take the EANx Diver course in conjunction with the Recreational Trimix Diver course
  • Must provide proof of a minimum of 15 logged dives
  • Must be a minimum of 15 years of age with a parent or guardian authorization, or a minimum of 18 years of age without guardian approval

If you wish to take this course with me get on touch on 07534 387152 or use the link below;

IANTD Recreational Trimix Training
IANTD Recreational Trimix Training

Published by Diving & Mountaineering Instructor

I am a passionate adventurer, loving being in the mountains walking, climbing, scrambling as much as I love being under the water exploring shipwrecks, mines and caverns, or in search of treasure in the depths. I am a Mountain Instructor (MIA), a Winter Mountain Leader, a Scuba Diving Instructor (BSAC, TDI, SDI, IANTD), a skipper for CAT3 waters up to 25mtr and as I’ve built this experience over time, I have written about it and published those works. In addition I am a Chartered Manager with CILT, a member of the institute of Engineering & Technology, a Fellow of the Institute of Leadership & Management and a Fellow of the Royal Geographical Society. I help people fulfill their goals in the Mountains (Worldwide), Scuba Diving (Worldwide), provide location support worldwide for the media and assist with technical and safety support whenever requested. For a full picture of me please check out my linkedin profile - https://www.linkedin.com/in/marklewisfinstlm

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