Product Overview
CO calibration gas is a certified reference material consisting of a precisely mixed blend of carbon monoxide (CO) and a balance gas (typically nitrogen, air, or synthetic air). As a critical metrological standard, this product is used to calibrate, verify, and maintain the accuracy of gas detectors, analyzers, and sensors that measure carbon monoxide concentrations. Personnel safety, regulatory compliance, and the reliability of process control all depend on the accuracy and traceability of the carbon monoxide calibration gas used. It is an indispensable tool for ensuring measurement integrity in life safety and industrial hygiene applications.
CO Calibration Gas Basic Information
| Main Component CAS Number | 630-08-0 (Carbon Monoxide) |
| UN Number | Varies depending on the mixture and concentration. Common classifications include UN 1954 (Compressed gas, n.o.s.) or specific entries such as UN 1016 (Compressed carbon monoxide). The exact UN number is determined by the CO concentration, total pressure, and balance gas. |
| Balance Gas | Typically high-purity nitrogen (N₂, CAS |
Key Features and Parameters
| CO Concentration | A wide range of concentrations is available, from low ppm levels for occupational exposure monitoring (e.g., 25 ppm, 50 ppm, 100 ppm) to high ppm or percentage levels for industrial process monitoring (e.g., 500 ppm, 1000 ppm, 1%). |
| Certified Accuracy | Values are traceable to NIST or other national metrology institutes, with documented uncertainty (e.g., ±1% or ±2% of the certified value). |
| Balance Gas Purity | High-purity balance gases are used to eliminate cross-sensitivity and ensure that the calibration source does not interfere with sensor performance. |
| Cylinders and Valves | Available in various sizes (e.g., 17L, 34L, 58L) in aluminum or steel cylinders, equipped with standard valves (e.g., CGA-350, CGA-660) to prevent misconnections and ensure safe operation. |
| Shelf Life/Stability | Under proper storage conditions, a stable shelf life (typically 24-36 months) is guaranteed, ensuring the mixture remains homogeneous and the certified concentration is reliable within the validity period. |
Features & Advantages
Traceable Accuracy and Comprehensive Certification
Each cylinder comes with an individual Certificate of Analysis (CoA), providing a traceable and auditable record of the certified carbon monoxide concentration and its associated uncertainty.
Long-Term Stability and Homogeneity
Advanced filling technology and specially treated cylinders ensure the CO calibration gas mixture remains stable and homogeneous throughout its certified validity period, guaranteeing consistent calibration results.
Critical for Life Safety and Compliance
By ensuring carbon monoxide detectors and monitors provide accurate and reliable alarms in potentially fatal environments, it is crucial for compliance with OSHA, NIOSH, and other global health and safety regulations.
Application-Optimized Formulations
Available in a variety of concentrations to directly match regulatory exposure limits (PEL/TLV/STEL), alarm set points for residential and commercial detectors, and process control requirements.
Functional Characteristics
The primary function of carbon monoxide calibration gas is to provide a known, stable reference point. It is used to introduce a gas sample of a precisely known CO concentration into a detection or analytical instrument. The instrument's reading is then compared against this known standard. The device is either adjusted (calibrated) to match the standard or its measurement accuracy is verified. Routine use of a certified carbon monoxide calibration gas is fundamental to ensuring that CO readings in the field are accurate, trustworthy, and capable of triggering life-saving alarms.
Primary Application Fields
Occupational Health & Industrial Safety
Calibration of personal, portable, and fixed CO detectors used in manufacturing, utilities (combustion processes), mining, welding, and confined space entry.
Environmental & Air Quality Monitoring
Calibration of continuous emissions monitoring systems (CEMS) for industrial stacks and ambient air quality analyzers in urban areas.
HVAC & Residential/Commercial Safety
Calibration and functional ("bump") testing of CO alarms in homes, hotels, schools, and commercial buildings, as mandated by fire codes and safety standards.
Automotive & Engine Testing
Calibration of exhaust gas analyzers for vehicle inspection, emissions testing, and engine development in R&D.
Fire Safety & Emergency Response
Calibration of multi-gas detectors carried by firefighters and first responders for atmosphere assessment.
Customer Collaboration Case
A large utility company managing numerous natural gas-fired power plants partnered with us to standardize and enhance their employee safety program. They required a consistent, nationwide supply of certified carbon monoxide calibration gas for the routine calibration and bump testing of thousands of portable multi-gas detectors used by maintenance and operations staff. We implemented a managed gas program, supplying custom mixtures at their required concentrations (e.g., 50 ppm CO) in easy-to-use, lightweight cylinders. The program featured automated cylinder replenishment, centralized online certificate management, and dedicated technical support. This partnership ensured that all personnel were equipped with accurately calibrated detectors, facilitating compliance with stringent OSHA standards, reducing exposure risks, and strengthening the overall safety culture-all anchored by the reliability of our carbon monoxide calibration gas.
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