ISO Certified Gas Mixture — traceable blends you can trust
An ISO Certified Gas Mixture from REAL GAZ is a blend whose composition has been prepared by weighing each component into the cylinder and then verified by independent analysis.
Every mixture is documented so that the stated concentration can be traced back to national standards, which is what auditors and accreditation bodies look for.
Every mixture is documented so that the stated concentration can be traced back to national standards, which is what auditors and accreditation bodies look for.
REAL GAZ supplies this product according to ISO 6142-1 for gravimetric preparation, ISO 6143 for comparison and calibration methods and ISO 17025 competence requirements, suitable for analytical and process-control work.
🏭 Where Certified Gas Mixtures Are Used
- ⚙️ Instrument calibration — analyser, gas chromatograph and sensor calibration where a documented reference value is required;
- 🔬 Accredited laboratories — reference blends used to demonstrate measurement traceability during accreditation audits;
- 🏥 Occupational monitoring — calibration of multi-gas detectors used in confined spaces, plants and storage areas;
- 🚀 Emission and process testing — stack monitoring and process analysers that must be checked against a known composition.
💡 Why Choose REAL GAZ
- ✅ Documented composition — each blend is accompanied by its stated concentration and expanded uncertainty;
- 🧪 Wide component choice — inert, reactive and flammable components can be combined within safe limits;
- 🎯 Matched to your range — concentrations are chosen around your alarm or measuring range rather than a generic value;
- 🔒 Stability considered — cylinder material and valve are selected to keep reactive components stable during storage;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
📦 Specifications and Supply
- Component levels from percent down to low ppm, subject to the chemistry of the blend;
- Aluminium or steel cylinders from 10 to 50 litre water capacity;
- Fill pressures commonly 100 to 200 bar depending on the mixture;
- Shelf-life statement and re-test advice given with the certificate.
Choosing a certified blend starts with the matrix gas, the target concentration and the uncertainty your method can tolerate. Our technical team will help you decide whether a standard catalogue mixture or a made-to-order blend is the sensible route.
A typical certificate lists the components, the certified concentration, the expanded uncertainty with its coverage factor, the preparation method, the analysis date and a recommended period of use. Reactive components such as nitric oxide, hydrogen sulphide or sulphur dioxide need specially treated cylinders, because they can be lost to the wall over time. Where a component is flammable, the final blend is kept outside its flammable range whenever the application allows. If your laboratory is working towards accreditation, tell us early, so that the documentation we provide fits the evidence your assessor will ask to see.
🔬 Quality Control & Safety
- multi-stage purification;
- precision gravimetric blending;
- moisture & impurity analysis;
- leak testing and pressure integrity checks.
Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
REAL GAZ supplies every ISO Certified Gas Mixture to customers in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA, with advice on cylinder choice, regulators and storage.
REAL GAZ — certified accuracy, delivered in the cylinder.