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Carbon Monoxide

High-purity carbon monoxide

Air Liquide manufactures carbon monoxide pure gas with minimum purity up to 99.97%. It is used in a variety of applications, such as catalyst regeneration, chemical synthesis and atmosphere reduction. Carbon monoxide as a pure specialty gas is also available in nonreturnable Mini-Mix™ Transportable cylinders when smaller quantities of gas are needed for laboratory applications.

Carbon monoxide is available as a component in many Scott™ brand gas mixtures, including two-component, three-component and multi-component gas mixtures. Carbon monoxide is used in nitrogen mixtures to form span gas calibration mixtures in engine emissions testing in the automotive industry. It is both ISO 17025 accredited and Part 86 compliant. Carbon monoxide gas mixtures are also used in environmental, industrial hygiene and safety, and laboratory applications. 


EPA Protocols: Carbon monoxide gas mixtures are manufactured as Scott brand EPA protocol gases and are instrumental in helping you avoid non-compliance fines and downtime caused by inaccurate instrument calibration. Air Liquide’s specialty gas manufacturing facilities are registered participants of EPA’s Protocol Gas Verification Program (PGVP). Protocol standards are dual-analyzed, and for each reactive component, two separate analyses are performed and analyzed directly against metrology institute standards to determine their concentrations. Certificates of Accuracy are provided with each cylinder.

In addition, carbon monoxide is also offered as part of multi-component EPA protocols to meet any specification. 

CEM DAILY STANDARDS™: Carbon monoxide gas mixtures manufactured as CEM DAILY STANDARDS are used in applications where the use of EPA protocol gases are not required. Zero blend tolerance is available as a result of our proprietary ACUBLEND™ technology. As a result, multiple cylinders exhibiting identical concentrations may be ordered, minimizing the need to recalibrate each time you change out a cylinder. These mixtures are available in two-component and multi-component variation.

  • Product Specifications

Carbon Monoxide Pure Gas Grades
Carbon Monoxide Gas Mixtures

Related Supply Modes

Air Liquide packages carbon monoxide pure gases and gas mixtures in a variety of high-pressure cylinders, including stainless steel, aluminum and nonreturnable Mini-Mix Transportable cylinders, depending on the grade of pure gas or composition of the gas mixture and your application.

Related Equipment

Air Liquide manufactures gas handling equipment designed to deliver carbon monoxide specialty pure gases and gas mixtures safely to your point of use, including regulators and manifolds.