Product Overview
CO2 Calibration Gas is a certified standard reference material consisting of a precisely blended mixture containing a known concentration of carbon dioxide (CO₂), with the balance gas typically being nitrogen, air, or synthetic air. This product is an essential metrological standard for calibrating, verifying, and ensuring the accuracy of gas analyzers, sensors, and monitors that measure CO₂ concentration. The reliability of environmental monitoring, safety systems, and process control depends on the traceable accuracy and stability of the carbon dioxide calibration gas used. It is a fundamental tool for quality assurance and regulatory compliance across various industries.
Basic Information
| Main Component CAS Number | 124-38-9 (CO2 Calibration Gas) |
| UN Number | Varies depending on the mixture. Common classifications include UN 1956 (Compressed gas, n.o.s.) or UN 1013 (Carbon dioxide). The specific UN number depends on the CO₂ concentration, total pressure, and balance gas composition. |
| Balance Gas | Typically high-purity nitrogen (N₂, CAS7727-37-9) |
Key Features and Parameters
| CO₂ Concentration | A wide range of concentrations is available, from ambient concentrations and sub-ppm levels (e.g., 400 ppm, 1000 ppm) to high percentage levels (e.g., 1%, 5%, 10%, 15%), suitable for various applications. |
| Certified Accuracy | Concentration values are traceable to NIST or other national metrology institutes and have a specified uncertainty (e.g., ±1% or ±2% of the nominal value). |
| Balance Gas Purity | High-purity gases are used to prevent cross-interference and ensure that the calibration gas itself does not introduce contaminants. |
| Cylinders and Valves | Available in various cylinder sizes (e.g., 34L, 58L), made of aluminum or steel, and equipped with industry-standard valves (e.g., CGA-320, DIN 477) to ensure proper and safe connection. |
| Shelf Life/Stability | Guaranteed stable shelf life, typically 24 to 36 months, provided the cylinders are stored in a cool, dry place away from direct sunlight. Features and Benefits |
Features and Benefits
NIST Traceable and Certified
Each CO2 Calibration Gas cylinder comes with an individual Certificate of Analysis (CoA) documenting the precise CO₂ concentration and its measurement uncertainty, providing a reliable calibration standard.
Long-Term Stability and Uniformity
Professional cylinder preparation and filling techniques ensure the gas mixture remains uniform and stable throughout its certified lifespan, guaranteeing repeatable calibration results.
Compliance and Safety Support
Helps users comply with occupational safety (OSHA), environmental (EPA), and industrial hygiene standards by ensuring monitoring equipment provides accurate readings.
Application-Tailored Formulations
Concentrations are available to meet specific regulatory limits (e.g., OSHA PEL/TLV), indoor air quality thresholds (e.g., ASHRAE 62.1), or process control setpoints.
Functional Characteristics
Carbon dioxide calibration gas serves as a known reference point. Its core function is to introduce a sample of known, precise CO₂ concentration to a gas analyzer, sensor, or monitor. The instrument's reading is then compared to this certified value. The device is then adjusted (calibrated) to match the standard value, or its measurement accuracy is verified. Using certified carbon dioxide calibration gas is a crucial step in ensuring accurate, reliable, and legally defensible measurement results in the field or laboratory for auditing and reporting purposes.
Main Application Areas
Indoor Air Quality (IAQ) and HVAC
Calibrating monitors in offices, schools, and buildings to ensure adequate ventilation and occupant health.
Industrial Safety and Occupational Health
Calibrating portable and fixed detectors used in breweries, wineries, chemical plants, and confined spaces to protect workers from hazardous CO₂ levels.
Environmental Monitoring
Calibrating continuous emission monitoring systems (CEMS) for industrial stacks and ambient air quality monitoring networks.
Life Sciences and Agriculture
Calibrating analyzers in laboratory incubators, fermentation processes, and greenhouse/controlled environment agriculture (CEA) applications.
Food and Beverage (Modified Atmosphere Packaging)
Calibrating headspace analyzers to ensure correct gas mixtures for food preservation and packaging.
Customer Collaboration Case
A multinational pharmaceutical company engaged with us to support their global laboratory and manufacturing quality control standards. They required a reliable, globally consistent supply of certified carbon dioxide calibration gas for calibrating the CO₂ sensors in hundreds of critical cell culture incubators and bioreactors across their facilities. The challenge was to ensure measurement consistency for cell growth processes that are highly sensitive to CO₂ levels. We provided them with a customized mixture at their specific setpoint (e.g., 5% CO₂ in air) in standardized cylinder packs, along with a global procurement and logistics management program. Our certified carbon dioxide calibration gas, backed by consistent documentation, enabled them to standardize their calibration procedures worldwide, ensure process reproducibility, maintain product quality, and seamlessly pass regulatory audits.
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