Specialty Gas CO₂ — high purity carbon dioxide and certified CO₂ blends
Specialty Gas CO₂ from REAL GAZ covers high purity carbon dioxide, with grades such as 4.5 (99.995%) and 5.0 (99.999%), and certified mixtures in which CO₂ is the analyte or the matrix. It is intended for work where trace impurities change a measurement or a product.
Gas is dried, filtered and analysed, then filled into cylinders cleaned for high purity service.
Gas is dried, filtered and analysed, then filled into cylinders cleaned for high purity service.
Quality is referenced to ISO 6142, ISO 6143 and ISO 17025 practice, with cylinder preparation to ISO 9809 and EN ISO 11114 material compatibility guidance.
Common specialty requests include CO₂ in nitrogen for emission analyser calibration, CO₂ in air for indoor air quality sensors, and CO₂ with methane for biogas instruments. For these mixtures the balance gas, the cylinder material and the fill pressure are chosen together, because condensation of CO₂ at higher concentrations can change the real composition if the cylinder is too cold.
Specialty carbon dioxide differs from the commodity gas in what is controlled and reported. Instead of one headline purity, the certificate lists moisture, oxygen, hydrocarbons, carbon monoxide, nitrogen and sometimes sulphur compounds. Those figures decide whether the gas is suitable for a sensitive detector, a supercritical process or a clean-room application, so we recommend reading them before placing an order. Because purity claims are only useful when they can be checked, our staff will explain how each impurity was measured, which method detection limit applied and how the cylinder was conditioned, so your own laboratory can reproduce or verify the figures.
🏭 Where Specialty CO₂ Is Used
- ⚙️ Supercritical extraction — clean CO₂ above 31 °C and 74 bar extracts natural compounds without solvent residues;
- 🔬 Analyser calibration — certified CO₂ standards support combustion, air quality and greenhouse chamber instruments;
- 🏥 Incubators and cell culture — laboratory CO₂ controls pH in incubators, where purity affects cell conditions;
- 🚀 Electronics and precision cleaning — controlled impurity levels suit precision cleaning and process atmospheres.
💡 Why Choose REAL GAZ
- ✅ Impurity data — moisture, oxygen, hydrocarbons and carbon monoxide are individually reported;
- 🧪 Mixture capability — blends from ppm to percent levels, prepared gravimetrically;
- 🎯 Cleaned cylinders — preparation and drying matched to the grade, reducing contamination risks;
- 🔒 Technical consultation — help with regulators, tubing material and sampling lines;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- multi-stage purification and drying;
- precision gravimetric blending;
- trace moisture and impurity analysis;
- leak testing and pressure integrity checks.
Use stainless or PTFE tubing and dedicated regulators with high purity CO₂ so that sample quality is preserved to the instrument.
Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
REAL GAZ provides Specialty Gas CO₂ to research centres, food laboratories and technical companies in Azerbaijan, Turkey, Georgia and Uzbekistan. Share your purity target or mixture recipe, and we will return an offer with specification.
REAL GAZ — specialty CO₂ certified where it counts.