PRECISION BREATHING GAS MIXTURE — tight-tolerance blends for demanding users
A precision breathing gas mixture from REAL GAZ is a blend in which every component is prepared and verified to a narrow tolerance, typically within a few hundredths of a percent for the main constituents. Such accuracy matters where physiological research, simulator testing or equipment qualification depends on the exact oxygen fraction delivered.
Blends are made gravimetrically from high purity feed gases, so uncertainty can be stated and carried through to your own results.
Blends are made gravimetrically from high purity feed gases, so uncertainty can be stated and carried through to your own results.
Preparation follows ISO 6142-1, composition is verified following ISO 6143, and the analytical laboratory works under ISO 17025 principles, serving research and test-bench users.
Feed gases are normally oxygen 4.5, nitrogen 5.0 and, where needed, helium 5.0 or carbon dioxide 4.5. Because each addition is weighed on a comparator balance, the final fraction is calculated from mass and molar mass instead of being estimated from pressure. This removes the non-ideal gas error that affects simple pressure-based blending at high fill pressures.
Documentation matters as much as the gas. Each certificate lists the target and measured fraction of every component, the analytical method, the date of analysis and the validity period. If your protocol requires repeat batches, we keep the preparation record so a later cylinder can be made to match the earlier one as closely as the method allows.
🏭 Where Precision Breathing Gas Mixtures Are Used
- ⚙️ Respiratory research — Studies of lung function and exercise physiology need oxygen, nitrogen and carbon dioxide blends with known uncertainty;
- 🔬 Altitude and hypoxia simulation — Low-oxygen blends such as 12% or 15% O₂ in nitrogen recreate altitude conditions in training chambers;
- 🏥 Regulator and mask testing — Test benches use stable reference blends to prove that breathing equipment performs within its approval limits;
- 🚀 Analyser calibration — Oxygen sensors and paramagnetic analysers are spanned against certified mixtures before field use.
💡 Why Choose REAL GAZ
- ✅ Narrow tolerance — relative blending tolerance can be agreed as low as ±1% for the principal component;
- 🧪 Stated uncertainty — the certificate reports expanded uncertainty so your data stays defensible;
- 🎯 Stable cylinders — treated aluminium cylinders keep reactive or low-level components from drifting;
- 🔒 Small batch flexibility — single cylinders or repeat series are available for ongoing trials;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- feed gas purity verification before blending;
- balance calibration with traceable reference masses;
- analysis against independent reference standards;
- stability checks and leak testing of each valve.
Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
REAL GAZ prepares each precision breathing gas mixture to order for universities, equipment makers and test laboratories in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA. Tell us the components, the tolerance and the cylinder size and we will confirm what can be certified.
REAL GAZ — Accuracy you can write into your protocol.