ESC Spectrum Suppliers

ESC Spectrum partners with key Continuous Emissions Monitoring (CEM) and process control suppliers to ensure our customers have access to the right equipment for their facility’s application. We have decades of expertise using CEMS and process control instrumentation from our CEMS suppliers to create new custom-built systems, as well as repair, upgrade, and maintain current systems. Our partnerships ensure your plant acquires the right equipment at the right price.


Airgas®, an Air Liquide company, is a leading U.S. supplier of industrial, medical and specialty gases, as well as hardgoods and related products; and one of the largest U.S. suppliers of safety products.

California Analytical Instruments Supplier

California Analytical Instruments (CAI)

For more than 40 years, California Analytical Instruments (CAI) has produced the highest-quality gas analyzers and emission-monitoring systems for industrial, environmental, and process control applications.

CODEL Supplier


CODEL provides a range of instrumentation, from analyzers to gas, dust, and flow monitors to fully automated and integrated emissions monitoring systems. Product lines include EnergyTech, Smartcem and TunnelTech.

Durag Group Supplier


DURAG provides solutions for process and environmental monitoring, combustion and safety monitoring, as well as tunnel and traffic monitoring. They lead the industry with reliable, safe, and efficient technology.

M&C Tech Group Supplier

M&C TechGroup

M&C TechGroup is a leading provider of high-quality gas sampling, gas conditioning, and process control solutions, with long-standing expertise in the engineering and construction of gas analyzing systems.

Teledyne Technologies

Teledyne API and Monitor Labs, as part of Teledyne Technologies Incorporated, provide enabling technologies for industrial growth markets that require advanced technology and high reliability.

Thermo Fisher Supplier

Thermo Fisher Scientific

Thermo Fisher is a leader in analytical instrumentation for environmental and process control monitoring. Their solutions include Gas Analyzers, Mass Spectrometry, Chromatography, and more.

Thermon Supplier logo


A world leader in industrial process heating, Thermon provides high-quality solutions for environmental monitoring, complete flow assurance, industrial heating, temperature maintenance, and freeze protection.

Process Insights

Process Insights products and solutions are at work all over the world. They focus on innovative and differentiated solutions and technologies that add high value to their end-users’ applications and processes.

Other CEMS Suppliers

We work with many great suppliers for emission monitoring. Some of our additional suppliers include ABB, Altex/AIR, APEX Instruments, Galvanic Applied Sciences, Gasmet, Honeywell, MTL Instruments by Eaton, Novatech Controls, O’Brien, RKI Instruments, Sensidyne, Servomex, SICK, Tekran, Testo, Universal Analyzers, and more. 

Product Manuals

Visit the Product Manuals directory to learn more about the Continuous Emissions Monitoring (CEM) and process control equipment that ESC Spectrum and its suppliers provide.

Product Data Sheets

Visit the Product Data Sheets directory to learn about the features, benefits and specifications of the Continuous Emissions Monitoring (CEM) and process control equipment that ESC Spectrum and its suppliers provide.

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From The Source Blog

Final Rules – MATS Residual Risk & Technology Review and Greenhouse Gas (GHG) Performance Standards

In May of 2024, the EPA finalized stricter rules for Mercury Air Toxic Standards (MATS) and Greenhouse Gas (GHG) Performance Standards. Key changes include tighter limits on particulate matter and mercury emissions, mandatory use of PM Continuous Emissions Monitoring Systems (CEMS), and new compliance timelines. Learn more about how these final rules can affect your facility.

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