Helium-based gas blending for trimix and hypoxic mixes — cascade systems, precise three-gas calculations, and the skills to produce the gases that technical divers depend on at depth. The qualification for serious technical gas support.
The TDI Advanced Gas Blender course takes your gas blending skills into trimix territory — helium-based mixes, cascade systems, hypoxic blends, and the precision required when divers are breathing these gases at depth. For technical support divers, liveaboard crews, or technical divers who want complete control over their own gas supply, this is the qualification that delivers it.
This course covers the theory and practical skills behind blending helium-based gas mixes. That means understanding cascade systems, working out the maths for trimix blends (which is considerably more involved than the two-gas calculations for nitrox), managing multiple source gases, and doing it all while keeping contamination and waste to a minimum. Helium isn't cheap — you learn to blend efficiently, not just correctly.
We'll also cover hypoxic mixes — blends with less than 18% oxygen that are unbreathable at the surface but essential for deeper technical dives. These mixes require a different mindset: you're blending something that will kill you if you breathe it in the wrong place, so the procedures and labelling become critical. This is precision work, and the course reflects that.
Malta's a good place to run this course because there are active technical divers here who actually use the stuff. You're not blending theoretical mixes — you're learning to make the gas that people are diving on real wrecks in real conditions. That context matters.
If you're planning on doing serious trimix diving — especially Advanced Trimix or hypoxic CCR — understanding how the gas is actually made gives you a level of confidence and knowledge that makes you a better, safer diver.
Advanced Gas Blender is the qualification to blend trimix and other helium-based mixes. Practically, it's the knowledge that means you can have an informed conversation about your gas, understand what you're actually breathing, and verify that what you've been handed is what you asked for. For anyone doing deep technical diving, that's not optional knowledge — it's foundational.