The changing pace of environmental regulations worldwide, coupled with the dynamics of a highly competitive marketplace, produce an array of complex challenges for industries utilizing emissions-monitoring gases. Flaws in the calibration gas can result in productivity losses and other complications. Therefore, monitoring must be done with strict adherence to regulatory agency requirements. This includes using precise and protocol-compliant reference standards to achieve accurate measurements. 

Praxair ProSpec™ EPA Protocol and Emissions Monitoring Gases not only help you ensure the use of calibration gases that are compliant with regulatory demands but also help save you rework and cost associated with reference peak height drift. The stability of ProSpec gases also helps ensure less wasted gas and a longer shelf life, allowing you to use your gas for longer periods of time and have fewer concerns about inventory expiration. 

Features and Benefits

Longer Shelf Life 

Our cylinder design and preparation methods help ensure that the actual mixture concentration in the cylinder stays constant over longer periods of time. This reduces troublesome reference peak height drift that results in rework and cost. Our gas mixture stability not only gives you a longer shelf life, but also reduces wasted gas while simplifying inventory management. All of our shelf-life specifications are backed by real time testing of concentration levels.

Higher Accuracy

We have invested in the research and development of cutting-edge analytical tools and procedures to provide measurements with high levels of sensitivity, linearity and reproducibility. Through the care we take in mixture preparation, as well as our advances in analytical instrumentation and quality control, you are assured accuracy and precision in the mixes you buy, giving you an added measure of certainty in your calibrations and subsequent measurements.

Greater Precision

Our technology and procedures ensure that our EPA Protocol and Emissions Monitoring Gases are repeatable with minimal deviation from the stated target.

Praxair’s Proprietary Process – The Key to Success

By investing in the quality of our products and using a proprietary process that pays strict attention to detail in four critical areas, we can consistently provide accurate, precise and stable gases.

Raw Materials

All source gases are qualified before purification to ensure quality and compliance with specifications. When producing mixtures with sub-ppm levels of minor components, purification is designed to  

Blending Techniques

Our gravimetric fill and automated dynamic blending ensure mix precision and consistency, and our gravimetric fill procedures minimize propagation of the variance inherent in any process. Each environmental mixture meets stringent quality, operational and/or traceability requirements.

Quality Control

Our analytical instrumentation plus a full suite of NIST SRMs/NTRMs are designed to provide consistent analytical accuracy. These analytical methods are used throughout the production process and as the final step in quality control.

Cylinder Preparation

Praxair’s cylinder preparation techniques are based upon the product properties themselves. Surface roughness and surface chemistry promote physical and chemical adsorption or desorption of species, which can change concentration. In addition, the surface can catalyze reactions between components. Praxair’s proprietary cylinder treatments minimize this problem to provide unmatched long-term stability.

EPA Protocol and Emissions Monitoring Gases from Praxair – Meeting Standards

With EPA Protocol and Emissions Monitoring Gases in calibration mixtures from Praxair, you are buying stable, high quality products. You benefit from our decades of experience, an extensive production network and an applications development team dedicated to helping customers of assorted types and sizes with EPA Protocol and Emissions Monitoring Gases that are NIST traceable and produced in accordance with EPA specifications.

ISO Certified Experts

Praxair’s worldwide facilities are ISO certified to ensure greater consistency, technical competence and a validated methodology. Our experts provide the guidance and support you need to help you resolve regulatory, technical and safety issues.

The Praxair Difference