TDI Advanced Nitrox
Technical Diving · Enriched Air to 100% · For Certified Nitrox Divers
Where enriched air becomes a technical tool. Advanced Nitrox certifies you to dive any mix from EAN 21 up to 100% oxygen on no-decompression dives to 130 feet, teaching the real physics and physiology of high-oxygen diving, oxygen limit planning, and oxygen-clean gear. It's a true technical certification and the foundation the rest of the tech path is built on. For most divers it's taught together with Decompression Procedures. You'll need your own mask, fins, boots, and snorkel, plus oxygen-compatible cylinders, regulators, and a BCD, and we'll help you sort configuration and what to rent versus own.
Veterans can put their GI Bill toward their training, and families can use ESA or ClassWallet funds. See if you qualify.
Availability: Contact us for booking information
TDI Advanced Nitrox Diver Course
Advanced Nitrox is where enriched air becomes a technical tool. Instead of the recreational cap, this course certifies you to dive any mix from EAN 21 all the way to 100% oxygen on no-decompression dives to 130 feet. You'll learn the real physics and physiology behind high-oxygen diving, how to plan with oxygen limits, and how to configure oxygen-clean equipment. It's a genuine technical certification, and it's the foundation the rest of the technical path is built on. It's also the natural next step after TDI Nitrox and Intro to Tech.
What it unlocks
This is the certification that opens the technical door:
- Dive any mix from EAN 21 through 100% oxygen on no-decompression dives
- Get maximum bottom time out of high-oxygen mixes at technical depths
- Build the gas-planning foundation every technical course after this relies on
- Qualify to move on to Decompression Procedures and rebreather training
What you'll learn
This is real technical theory, taught so you can apply it under pressure.
- The physics of higher oxygen partial pressures at depth
- CNS and pulmonary oxygen toxicity, and how to stay within limits
- Oxygen limit tables and using a computer with high-O2 mixes
- Oxygen-clean and oxygen-compatible equipment, plus an intro to gas blending
In-water skills you'll demonstrate
The open water dives prove you can hold technical standards in the water.
- Precise buoyancy control and horizontal trim
- Team awareness and air sharing
- Managing a regulator free-flow
- Controlled safety stops and stress analysis
Usually taught with Decompression Procedures
For most divers, Advanced Nitrox and Decompression Procedures are taught together as one combined program, since Advanced Nitrox supplies the high-oxygen gases that make accelerated decompression possible. Ask us about doing them as a pair, it's the most common and most efficient path.
Who can enroll
You'll need a nitrox foundation and some real dives behind you.
- Certified TDI Nitrox divers, or equivalent
- Proof of 25 logged open water dives
- Minimum age 15 with parental consent, 18 without
Where it leads
Advanced Nitrox is the launch pad for the rest of technical diving.
- Decompression Procedures, most often taken alongside this course
- Semi-closed and closed-circuit rebreather training
- The gas foundation for deeper and longer technical dives
- Pairs naturally with the Sidemount path
✓ What's included
- Instruction and your open water technical training dives
- The TDI Advanced Nitrox knowledge materials
- Oxygen limit and gas-planning tools used in the course
- Your TDI Advanced Nitrox certification on completion
What to bring
- Your own mask, fins, boots, and snorkel (required, we don't rent these)
- Oxygen-compatible cylinders, regulators, and BCD (required; call us about configuration and what to rent versus own)
- Your TDI Nitrox certification card and proof of 25 logged dives
- A swimsuit and a towel
Frequently Asked Questions
How is this different from regular nitrox?
How is this different from regular nitrox?
Should I take this with Decompression Procedures?
Should I take this with Decompression Procedures?
What are the prerequisites?
What are the prerequisites?
Does this let me do decompression dives?
Does this let me do decompression dives?
What gear do I need?
What gear do I need?
Is there a lot of theory?
Is there a lot of theory?
Let's. Go. Diving.
Ready to make the jump to technical diving? Call the shop and we'll map out Advanced Nitrox, and whether to pair it with Deco.
📞 Call the shop (480) 881-4013A technical certification for high-oxygen, no-decompression diving from EAN 21 through 100% oxygen to 130 feet. Prerequisites: certified TDI Nitrox diver (or equivalent) and 25 logged dives. Most often taught with Decompression Procedures.
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