Precision Oxygen Gas — certified O₂ levels for exact measurement
Precision oxygen from REAL GAZ is made for measurement, not combustion. Our Precision Oxygen Gas range includes certified oxygen in nitrogen at levels from ppm up to 25%, along with balanced reference mixtures for sensors and analysers.
Every cylinder states its concentration, uncertainty and validity date.
Every cylinder states its concentration, uncertainty and validity date.
REAL GAZ supplies this product according to ISO 6142-1, ISO 6143 and ISO 17025 alongside EN 50104 guidance for oxygen detectors, suitable for industrial and laboratory use.
Typical offers include 1%, 5%, 10%, 18%, 20.9% and 25% oxygen in nitrogen, plus ppm-level mixtures for inert atmosphere control. Zero gas for baseline setting is available as high-purity nitrogen supplied alongside, so one order covers the whole calibration kit.
🏭 Where Precision Oxygen Is Used
- 🛡️ Confined-space monitors — bump and calibration checks for portable oxygen-deficiency detectors;
- 🏭 Inerting control — verification of oxygen analysers on nitrogen blanketing systems;
- 🍽️ Packaging lines — reference gas for modified atmosphere residual-oxygen testers;
- ⚡ Combustion tuning — span gas for flue-gas oxygen sensors on boilers and kilns.
💡 Why Choose REAL GAZ
- ✅ Gravimetric preparation — concentrations link directly to weighed masses;
- 🧪 Wide range available — from low ppm levels to around 21% air-equivalent blends;
- 🎯 Stated uncertainty — documented tolerances help you meet your own calibration procedures;
- 🔒 Validity period shown — each cylinder indicates how long the certified value is guaranteed;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- precision gravimetric blending;
- analytical verification against reference standards;
- moisture control during filling;
- pressure integrity and leak checks.
Calibrate in line with the detector maker's instructions, using the correct flow rate and adequate stabilisation time. Do not use an oxygen blend below its minimum pressure, and replace it once its validity date has passed.
Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
REAL GAZ supplies Precision Oxygen Gas to safety managers, process engineers and laboratories in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA. Specify your range and we will confirm cylinder size, valve and certificate details.
Calibration frequency should follow your quality procedure and the instrument maker's recommendations. We keep records of previous deliveries and can alert you when certificates approach their end date, so safety-critical detectors never run on out-of-date reference gas.
Oxygen detectors protect people in confined spaces and tank farms, so calibration gas should never be an afterthought. We deliver on a schedule that matches your inspection calendar, and keep a spare cylinder available for urgent checks. Our technicians are happy to explain how flow rate, tubing length and sensor response time influence calibration results, so your readings reflect the true gas concentration and not the set-up. Ask for a sample certificate to see how concentration, uncertainty and expiry are presented.
REAL GAZ — exact oxygen, every time.