Air Products has been a leading gas supplier to the air emissions monitoring market for decades. Our products can be used for continuous emissions monitoring including all stages of testing as defined in EN14181.
Calibration of a continuous emissions monitoring system (CEM) necessitates traceable and accurately certified gas mixtures. The Experis® specialty gases range fulfils this requirement and delivers further benefits for users undertaking quality assurance levels QA1, QA2 or QAL3.
Air Products is the only supplier currently able to supply calibration gas mixtures certified within an ISO 17025 accreditation scope that contain NO, SO₂, CO and CO₂ in the same cylinder. This enables users to take advantage of a number of key technical, safety and cost benefits when compared to the more commonly available binary gas mixtures.
Complementing these mixtures, Air Products has a range of ultra-high-purity gases that can be used for analytical instrumentation or as zero gases.
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What is an accredited gas mixture?
Accredited gas mixture is a commonly used term to describe a gas mixture that has been certified within an ISO 17025 accreditation scope.
ISO 17025 defines the general requirements for the competence of testing and calibration laboratories. Accreditation is normally awarded by nation accreditation bodies, such as UKAS, ENAC and DKD.
The use of accredited gas mixtures is mandated for some aspects of quality assurance defined in EN14181:Quality Assurance of automated measuring systems.