Heliox Gas Blend for diving — breathing gas planned for depth
A Heliox Gas Blend for diving replaces nitrogen with helium so that a diver avoids nitrogen narcosis and breathes a lighter gas at depth, which REAL GAZ fills to the ratio specified by your dive supervisor.
Typical bottom mixes are 10/90, 16/84 or 21/79 (O₂/He), though the right blend always depends on the dive plan, depth and decompression schedule.
Typical bottom mixes are 10/90, 16/84 or 21/79 (O₂/He), though the right blend always depends on the dive plan, depth and decompression schedule.
Breathing gas quality is judged against EN 12021 principles, and blending follows ISO 6142, which suits commercial, scientific and technical diving organisations.
🏭 Where Diving Heliox Are Used
- 🌊 Commercial saturation diving — helium–oxygen is the base breathing gas for long-duration work at depth;
- 🐠 Scientific diving — research teams use helium mixtures for deeper surveys and sample collection;
- 🛟 Rescue and standby — emergency stage cylinders hold gas suitable for deep recovery;
- 🧭 Technical expeditions — wreck and cave divers carry heliox or trimix for extended range;
- 🏫 Training centres — approved courses teach mix planning, analysis and cylinder labelling.
💡 Why Choose REAL GAZ
- ✅ Analysed fills — oxygen content is measured before dispatch and written on the label;
- 🤿 Cylinder compatibility — pillar valves and DIN or yoke options are fitted for your regulators;
- 🎯 Planned ratios — we help check that the oxygen fraction suits the maximum operating depth;
- 🔒 Oxygen-clean service — all mixtures above 23.5% O₂ are handled with cleaned equipment;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
⚠️ Safety Points for Divers
Always analyse your gas yourself before the dive, label cylinders with the maximum operating depth and the mix, and never breathe a blend beyond its depth limit. Helium conducts heat quickly, so divers often need extra thermal protection and may use separate argon for dry-suit inflation. Cylinders should be stored upright, protected from heat, and only be filled by competent staff. Training and planning remain the diver's responsibility.
🔬 Quality Control & Safety
- multi-stage purification of helium and oxygen;
- partial-pressure and gravimetric blending;
- independent oxygen analysis of each cylinder;
- moisture control for cold-water diving;
- leak testing and pressure integrity checks.
Cylinders comply with ADR / UN transport rules, EN 12021 gas purity requirements where relevant, and ISO 9809 for the pressure vessels themselves.
⚙️ Trusted Gas Solutions
REAL GAZ supplies a Heliox Gas Blend for diving to dive centres, contractors and research groups in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA. Share your depth and plan, and our team will confirm the blend, cylinder size and delivery.
REAL GAZ — gas you can plan a dive around.