TDI Nitrox Certification
Your gateway to safer, longer dives with enriched air nitrox
TDI Nitrox Diver Certification in Nanaimo
Increase your bottom time, reduce nitrogen loading, and take the first step into advanced and technical diving.
The TDI Nitrox Diver course is the ideal upgrade for divers who want to get more out of every dive. By learning how to use enriched air nitrox, you can safely extend your no-decompression limits, enjoy longer dives, and prepare yourself for future technical training.
At Nanaimo Dive Outfitters, we offer TDI Nitrox training right here in Nanaimo and Central Vancouver Island, giving you the knowledge and confidence to use nitrox in our cold-water conditions and beyond.
Who is the TDI Nitrox Diver course for?
This course is designed for divers who want to expand their skills and start using enriched air nitrox safely and confidently and prepare for more advanced TDI programs:
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- Open Water divers who want to understand and use enriched air nitrox
- Divers interested in extending their bottom time without exceeding no-decompression limits
- Certified divers looking to begin the path toward TDI technical training
You can enroll at 18 years old, or at 15 with parental consent. You must be Open Water certified or currently completing your Open Water course.
TDI Nitrox Diver course format (Nanaimo Dive Outfitters)
The TDI Nitrox Diver program is primarily knowledge based and can be completed efficiently with a combination of online learning and hands-on training at our shop.
Training includes:
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- TDI Nitrox eLearning
- Classroom review and calculations
- Learn to analyze the oxygen content of cylinders
- Dive planning using nitrox tables or computers
No mandatory ocean dives are required for certification, but nitrox can be added to your upcoming dive charter or training program if you want real-world practice.
What you’ll learn in your Nitrox Diver course
The TDI Nitrox Diver course focuses on understanding how enriched air affects your dive planning, gas management, and exposure limits. You’ll learn:
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- The benefits and limitations of nitrox mixes from 22% to 40% oxygen
- How oxygen exposure and partial pressure limits affect your dive planning
- Equipment considerations for diving nitrox
- How to analyze a nitrox cylinder and verify its contents
- Proper cylinder labeling and tracking
- An introduction to gas blending concepts and safe handling procedures
By the end of the course, you’ll know how to safely plan and complete nitrox dives in a range of diving conditions.
Cold-water training, warm-water confidence
Training with Nanaimo Dive Outfitters gives you the skills to use nitrox safely anywhere you dive. Once you understand how enriched air affects your depth limits and exposure planning, you’ll be able to use nitrox confidently in both cold-water environments like British Columbia and warm, tropical destinations. Your TDI certification is recognized worldwide and forms the foundation for future technical training.
What’s included
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- TDI Nitrox Diver eLearning
- Classroom review and practical training
- Hands-on oxygen analysis practice
- Use of nitrox cylinders for training
Student perks: You’ll receive discounts on purchasing your own gear, plus one free nitrox fill after you certify. You’re also welcome to join our regular club dives.
Coming from out of town?
If you’ve already started your Nitrox Diver training elsewhere, we can complete your certification through a multi-agency referral. Contact us for details.
Nitrox Diver Course FAQ
What is the TDI Nitrox Diver course?
It’s an entry-level enriched air course that teaches you how to safely use nitrox mixtures from 22% to 40% oxygen to extend your no-decompression limits.
Do I need to be certified before taking the Nitrox course?
Yes. You must be an Open Water Diver or currently completing your Open Water training.
Do I have to do any ocean dives?
No. The TDI Nitrox Diver course is primarily academic and hands-on. Nitrox diving can be added to future ocean dives if you want practical experience.
What is enriched air nitrox?
It’s a breathing gas with a higher percentage of oxygen than regular air. Using nitrox reduces nitrogen uptake, which can extend allowable bottom time.
What nitrox percentages does the course cover?
You’ll learn to use and analyze mixtures from 22% to 40% oxygen.
Will nitrox let me dive deeper?
No. Nitrox has depth limits because of oxygen toxicity. You’ll learn how to calculate your maximum operating depth (MOD) for each mix.
Do I need special gear for nitrox?
Most modern dive gear is nitrox-compatible. You’ll learn which equipment considerations apply to enriched air diving.
Can I combine this course with other training?
Yes. Many divers pair it with their Advanced, Deep, or Wreck courses, or use nitrox on local dive charters.
What’s the next step after Nitrox Diver?
You can continue into TDI Advanced Nitrox, Decompression Procedures, or Technical Foundations courses.
How long does the course take?
Most students complete the eLearning and in-person training in one evening or a short session at the shop.
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