Precision Carbon Monoxide Gas — accuracy you can trace back to the balance
Precision Carbon Monoxide Gas from REAL GAZ is made for work where a small error in CO concentration becomes a large error in a result. It includes pure carbon monoxide of high grade and CO in nitrogen, air or helium at concentrations from a few ppm up to several percent.
Each mixture is built by weighing, not by guessing from pressure, which is why the stated value carries a documented uncertainty.
Each mixture is built by weighing, not by guessing from pressure, which is why the stated value carries a documented uncertainty.
Preparation follows ISO 6142-1 and verification follows ISO 6143, with traceability concepts aligned to ISO 17025 laboratory practice.
Stability is just as important as the initial value. Carbon monoxide can interact with some cylinder wall materials and with iron carbonyl formation at high pressure, so we select cylinder treatments and fill pressures appropriate to the concentration. For low-ppm standards we recommend treated aluminium cylinders, and we state a shelf life on the certificate so you know how long the value can be relied on.
When ordering, specify the nominal concentration, the balance gas, the acceptable tolerance and the analytical uncertainty you need. Typical certified ranges run from 5 ppm to 10% CO, and mixtures at the lower end are issued with a stated minimum use pressure so the value is not affected by wall adsorption as the cylinder empties. Always record the cylinder lot number in your calibration log.
🏭 Where Precision Carbon Monoxide Is Used
- ⚙️ Emission monitoring — stack and vehicle exhaust analysers are zeroed and spanned with CO standards matched to the regulatory range;
- 🔬 Safety instruments — fixed and portable CO detectors in car parks, boiler rooms and mines need regular bump tests and calibration;
- 🏥 Environmental research — ambient air programmes use low-ppm CO in air to track urban pollution trends;
- 🚀 Process analytics — online gas chromatographs and infrared analysers on reforming and furnace lines rely on reference values.
💡 Why Choose REAL GAZ
- ✅ Narrow tolerance — blend tolerance and analytical uncertainty are both stated, so you can compare them with your method requirements;
- 🧪 Matrix choice — nitrogen, synthetic air or helium balance gas can be selected to suit the instrument;
- 🎯 Low-level capability — ppm and sub-ppm standards are made by dynamic or staged dilution from certified parent mixtures;
- 🔒 Documented stability — the certificate gives a validity period and storage advice for the cylinder;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- multi-stage purification of the balance gas;
- precision gravimetric blending on calibrated balances;
- comparison with reference standards by gas chromatography or NDIR;
- leak testing and pressure integrity checks.
Keep calibration cylinders at stable room temperature and use a dedicated regulator made of stainless steel to avoid adsorption losses.
Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
REAL GAZ supplies Precision Carbon Monoxide Gas to laboratories, service companies and plant operators in Azerbaijan, Turkey, Georgia and Uzbekistan. Send us your range, balance gas and uncertainty target, and we will prepare a quotation with a matching certificate.
REAL GAZ — carbon monoxide standards that stay on target.