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.

Starting from

$475.00

Availability: Contact us for booking information

Description
Additional Information

TDI Advanced Gas Blender Course

Helium & Trimix Blending · Fill for Technical Diving · No Diving Required

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?

Helium. The Nitrox Gas Blender course covers enriched air; this one adds blending with helium so you can produce trimix for deeper technical diving, along with the extra oxygen and hypoxic-gas safety that higher-end blending requires.

What are the prerequisites?

You'll need to be at least 18 and hold a TDI Nitrox Gas Blender certification, or equivalent. No diving certification is required. If you're not a nitrox blender yet, we'll get you through that course first.

Are there any dives?

No. Like the nitrox blending course, this is classroom and fill-station training, TDI eLearning for the knowledge plus hands-on practical work with an instructor. There's no in-water component.

What will I actually blend?

To certify, you'll blend and analyze real gas: five nitrox cylinders and three trimix cylinders. You leave having done the work on live equipment, not just studied it.

What can I do once I'm certified?

You're qualified to blend mixes containing helium, including trimix, on your own. It's the certification a dive shop needs for anyone filling technical divers' tanks.

Do I need to be a diver?

No diving certification is required. It's written for dive shop staff and for divers who want to understand advanced blending. The only diving-adjacent requirement is the Nitrox Gas Blender certification.

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.

Call the shop (480) 881-4013

A TDI advanced gas blending certification adding helium and trimix, delivered as eLearning plus hands-on practical training with a TDI instructor. Certifying blends: five nitrox and three trimix cylinders. Prerequisite: TDI Nitrox Gas Blender (or equivalent). No dives. Minimum age 18.

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