TDI Advanced Gas Blender
Helium & Trimix Blending · Fill for Technical Diving · No Diving Required
From enriched air to helium and trimix. The TDI Advanced Gas Blender course takes you beyond nitrox into blending with helium, so you can produce the trimix technical divers rely on for deeper dives. You'll add helium to the methods you already know, master oxygen and hypoxic-gas safety, and prove it by blending and analyzing real cylinders (five nitrox and three trimix). It's classroom and hands-on with a TDI instructor, no dives and no dive gear. You'll need to be 18 and hold a TDI Nitrox Gas Blender certification first. It's the credential a shop needs to fill technical divers' tanks.
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 Gas Blender Course
Nitrox is where blending starts. Trimix is where it gets serious. The TDI Advanced Gas Blender course takes you beyond enriched air and into blending with helium, so you can produce the trimix that technical divers rely on for deeper dives. You'll add helium to the methods you already know, master the extra oxygen and hypoxic-gas safety that higher-end blending demands, and prove it by blending and analyzing real cylinders. It's classroom and fill-station work with no diving involved, and it's the certification a shop needs to fill technical divers' tanks.
What this adds
Everything from nitrox blending, plus the skills that make trimix possible:
- Safely incorporate helium into your mixes
- Produce trimix for deeper technical diving applications
- Manage hypoxic-gas risk with proper labeling, verification, and procedures
- Blend mixes containing helium on your own once certified
What you'll learn
The blending toolkit, extended to helium and trimix.
- Partial pressure blending mathematics
- Continuous blending, de-nitrogenated air, and pre-mix systems
- Adding helium to a mix, and the calculations behind it
- Producing trimix to a target blend
Safety & analysis
Higher-end gases raise the stakes, so this is where the discipline lives.
- Oxygen hazards, and the causes and prevention of oxygen fire
- Oxygen system design and oxygen-clean handling
- Hypoxic gas risk management: labeling, verification, and procedures
- Oxygen analysis and helium calculations on every mix
Prove it on real cylinders
This isn't only theory. To certify, you'll blend and analyze real gas: five nitrox cylinders and three trimix cylinders, so you leave having actually done the work, not just read about it.
Who it's for
Built for the people who fill technical divers' tanks.
- Dive shop staff moving into technical gas fills
- Divers who want to understand advanced blending
- Certified nitrox blenders ready for the next step
- Minimum age 18
Before you enroll
You'll need the nitrox blending foundation first.
- Proof of certification as a TDI Nitrox Gas Blender, or equivalent
- Minimum age 18
- No diving certification required
- Not a blender yet? We'll get you through Nitrox Gas Blender first
✓ What's included
- The TDI Advanced Gas Blender eLearning and knowledge materials
- Hands-on practical training with a TDI instructor
- Time on real blending and gas-analysis equipment
- Your TDI Advanced Gas Blender certification on completion
Good to know
- No dives and no dive gear. This is a classroom and fill-station course.
- Nitrox Gas Blender comes first. It's the prerequisite for this course.
- You'll blend and analyze real cylinders (5 nitrox, 3 trimix) to certify.
- The certification a shop needs to fill technical divers' trimix.
Frequently Asked Questions
What does this add over the Nitrox Gas Blender course?
What are the prerequisites?
Are there any dives?
What will I actually blend?
What can I do once I'm certified?
Do I need to be a diver?
Learn to Blend Trimix.
Go from enriched air to helium and trimix. Call the shop and we'll get your Advanced Gas Blender course scheduled.
