Precision Argon CO₂ Mixture

Precision Argon CO₂ Mixture — argon-CO₂ mixtures with stated uncertainty

A Precision Argon CO₂ Mixture is defined by the quality of its numbers: component fractions, expanded uncertainty and stability are each reported, not assumed.
REAL GAZ prepares these mixtures on balances calibrated against traceable masses and checks them against independent standards.

Reported results rely on ISO 6142-1 gravimetry, ISO 6143 comparison methods and ISO 16664 handling of reference and working standards.

Precision depends on method. In gravimetric preparation, each component is added to an evacuated cylinder and weighed on a calibrated balance, so the final fraction is calculated from mass rather than pressure. The result is then compared with independently prepared standards using a gas chromatograph or an infrared analyser, and any difference beyond the acceptance limit leads to rejection and re-blending.

The uncertainty on the certificate combines the weighing, the purity of the raw gases and the analytical comparison, and is normally reported at a 95% confidence level. Typical relative expanded uncertainties for CO₂ in argon are in the range of 1% to 2%, depending on the concentration. For best results, allow the cylinder to equilibrate in the laboratory, roll it gently if the label advises, and use it before the stated expiry date. Where a measurement campaign runs for months, REAL GAZ can reserve a matched set of cylinders from the same batch, so that a single reference composition supports the whole programme and the comparison between sites stays valid. Ask for a stability statement if your protocol requires one.

🏭 Where Precision Argon-CO₂ Mixtures Are Used

🌍 Greenhouse gas measurement — reference for CO₂ analysers in climate and agricultural monitoring networks;
🏭 Process analyser checks — periodic verification of inline CO₂ sensors in plants;
🔬 Metrology — working standards derived from higher-level references in calibration laboratories;
🧫 Research chambers — growth and atmosphere chambers where exact CO₂ levels influence results.

💡 Why Choose REAL GAZ

✅ Stated uncertainty — expanded uncertainty with coverage factor is on the certificate;
🧪 Matrix match — argon background matches the sample or process gas you measure;
🎯 Concentration choice — values from low ppm to several per cent are available;
🔒 Stability data — validity period is given to support your recalibration planning.
📄 Certificate of Analysis (CoA) — supplied with every order.

🔬 Quality Control & Safety

calibrated mass measurement;
comparison with independent reference standards;
moisture and impurity analysis;
cylinder passivation and leak checks.

Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.

⚙️ Trusted Gas Solutions

Measurement confidence depends on references you can trust, and a Precision Argon CO₂ Mixture from REAL GAZ is documented from raw gas to final analysis. Our customers in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA use these mixtures for calibration, monitoring and research.

REAL GAZ — Numbers you can trust.