Precision Helium Gas — tight tolerances for calibration and metrology
Precision helium gas from REAL GAZ is prepared for users who need certified composition and repeatable results, such as calibration laboratories, instrument makers and process analysts.
It can be supplied as ultra-pure helium or as helium blended with trace components, prepared by gravimetric methods with stated uncertainty.
It can be supplied as ultra-pure helium or as helium blended with trace components, prepared by gravimetric methods with stated uncertainty.
REAL GAZ supplies this product according to ISO 6142, ISO 6143 and ISO 17025, suitable for calibration and laboratory use.
Gravimetric preparation weighs each component on a calibrated balance, giving concentrations traceable to mass standards, while ISO 6143 methods compare mixtures against reference gases. Aluminium cylinders with treated inner walls help keep reactive trace components stable. Precision work also requires clean regulators and short, purged tubing, and cylinders should be left to reach room temperature before use.
Uncertainty is not a weakness but a statement of honesty. Each certified value comes with an expanded uncertainty, typically a few per cent relative for trace components, and a stated shelf life during which the composition remains valid. Users should keep cylinders above a minimum residual pressure, because the final bar of gas may differ in composition. We also advise warm storage and gentle rolling before use for mixtures containing condensable components. Ask us for the stability data of any blend you plan to order.
🏭 Where Precision Helium Is Used
- ⚙️ Detector calibration — helium zero and span gases set the baseline of GC and leak detectors;
- 🔬 Metrology laboratories — reference gas preparation uses helium as a certified balance gas;
- 🏥 Environmental monitoring — analysers measuring trace pollutants are calibrated against helium-balanced mixtures;
- 🚀 Instrument manufacturing — production lines verify sensors with certified helium blends.
💡 Why Choose REAL GAZ
- ✅ Gravimetric accuracy — blends are weighed on calibrated balances for traceable composition;
- 🧪 Stated uncertainty — certificates list concentration and tolerance clearly;
- 🎯 Stable cylinders — internal treatment protects reactive components;
- 🔒 Custom compositions — you specify the component and level, and we propose a feasible blend;
- 📄 Certificate of Analysis (CoA) — stating certified composition and uncertainty, supplied with every order.
🔬 Quality Control & Safety
- gravimetric weighing on calibrated balances;
- analytical comparison with reference gases;
- impurity and moisture analysis;
- leak testing of valves and cylinder necks.
Cylinders comply with ADR / UN transport rules and relevant EN ISO cylinder standards.
⚙️ Trusted Gas Solutions
REAL GAZ supplies precision helium gas to laboratories and manufacturers in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA, with technical support for method set-up.
REAL GAZ — accuracy you can trace.