Precision Compressed Air Gas — tightly specified air for measurement and calibration
Precision Compressed Air Gas from REAL GAZ is air whose composition is controlled and certified, rather than simply drawn from the atmosphere, so that measurements made with it can be repeated and defended.
Synthetic air is blended from high-purity nitrogen and oxygen at about 20.9 % oxygen, with very low hydrocarbons, carbon monoxide and carbon dioxide.
Synthetic air is blended from high-purity nitrogen and oxygen at about 20.9 % oxygen, with very low hydrocarbons, carbon monoxide and carbon dioxide.
Blending follows ISO 6142-1, composition is verified against ISO 6143 and the laboratory works to ISO 17025, making the gas suitable for industrial and laboratory reference work.
Certificates state the oxygen fraction with an expanded uncertainty, together with the preparation method and the date of analysis. Typical offers include 20.9 % oxygen in nitrogen, 21.0 % reference air and humidified variants for sensor testing, in 10, 20 and 50 litre cylinders. Because oxygen can be depleted slowly by cylinder walls, REAL GAZ uses aluminium cylinders with treated interiors where shelf life matters, and recommends use within the validity period printed on the certificate.
🏭 Where Precision Air Is Used
- ⚙️ Emission analyser calibration — stack and engine analysers are zeroed with hydrocarbon-free synthetic air before span checks;
- 🔬 Research and method development — reference air provides a defined matrix for trace-gas studies and sensor characterisation;
- 🏥 Respiratory equipment testing — test labs check flow and oxygen sensors against a known composition, without any patient use implied;
- 🚀 Materials and sensor testing — semiconductor, battery and gas-sensor developers need an oxygen level that does not drift between batches.
💡 Why Choose REAL GAZ
- ✅ Stated composition — the oxygen fraction and trace impurities are reported for each cylinder;
- 🧪 Hydrocarbon-free grades — total hydrocarbons are held low enough for flame ionisation and photoionisation detectors;
- 🎯 Tight tolerances — gravimetric preparation keeps the oxygen value within a narrow, documented range;
- 🔒 Passivated cylinders — treated internal surfaces help the composition stay stable over the shelf life;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- high-purity nitrogen and oxygen sourcing;
- gravimetric weighing on calibrated balances;
- trace carbon monoxide, carbon dioxide and hydrocarbon analysis;
- valve leak testing and cylinder pressure verification.
Store precision air cylinders in a stable temperature range and use dedicated regulators to avoid contaminating the reference line. Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
REAL GAZ prepares Precision Compressed Air Gas for calibration laboratories, research institutes and instrument makers in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA. Ask us about custom oxygen levels, humidified air or special cylinder sizes for your method.
REAL GAZ — air you can put a number on.