Advanced Nitrox

TDI Advanced Nitrox Diver


The TDI Advanced Nitrox Diver course will teach you to safely utilise Nitrox and oxygen mixes from 22% to 100% as a breathing gas. Although not a decompression diving course, it is common to combine the Advanced Nitrox Diver with the TDI Decompression Procedures or Helitrox Diver course which will teach you to utilise the richer Nitrox mixes to accelerate any decompression you may wish to complete.


What Will You Learn?

During the TDI Advanced Nitrox course not only will you become proficient with analysing and marking cylinders containing high percentages of oxygen, but you will also work on your overall diving ability. To be able safely to use the full range of Nitrox mixes available to you after certification as an Advanced Nitrox Diver you will need to ensure that you achieve excellent buoyancy control and the ability to maintain this control even if things are going wrong around you.

By working on your buoyancy and trim in full technical diving over the course of 4 dives and 100 minutes bottom time you will finish the course with confidence to maintain safety stops, share gas with another diver and handle failures such as free flowing regulators or leaking hoses.

The majority of our Advanced Nitrox courses are run in combination with other TDI programmes, so please check out our Combined Courses page for more details, along with upcoming course dates.



  • Minimum age 18 (15 with parental consent)
  • Minimum certification of Enriched Air Nitrox Diver, or equivalent 
  • Show proof of 25 logged open water dives
  • If this course is taught in conjunction with the TDI Decompression Procedures course, the minimum age is 18 


Ready To Book?

Simply choose from one of our available course dates below. A £100 deposit will secure your chosen course start date, and the balance can be paid any time before the end of your training. If you don’t see any suitable dates, please get in touch and we can try to accommodate your request.

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