We help companies monitor
& reduce emissions throughout
the USA, Canada and the world

more than


sites serviced



years experience

work across



30 years

Since 1992, we have worked with customers across diverse industries to provide consulting, integration design, manufacturing, service, repairs and on-site performance certification testing. We take pride in our strong track record and long list of repeat customers.

Trust the Experts

• Full Service Integrator
• Process Analyzers
• Emission Monitoring Systems
• All Major brands available & supported
• Health & Safety Monitors
• World Wide Service
• 30+ Years of service and sales
• ISO9001:2015 Registered
CEMSI provides support throughout
the entire life cycle of Continuous
Emissions Monitoring Systems
CEMSI has achieved a 100% success rate
in regulatory compliance monitoring
cemsi lifecycle
CEMSI provides support throughout the entire life cycle of Continuous Emissions Monitoring Systems
CEMSI has achieved a 100% success rate in regulatory compliance monitoring
cemsi lifecycle

Our Partners

We believe in working with others to maximize value for all. We are proud of our strong relationships with numerous industry leaders in the emissions monitoring and process analytics space.

Partner Logos fodisch
Partner Logos buchi
Partner Logos spectraflow
Partner Logos clayborn labs
Partner Logos mc
Partner Logos brand gaus
Partner Logos abb
Partner Logos rki instruments
Partner Logos dekoron unitherm
Partner Logos thermofisher
Partner Logos teledyne
Partner Logos durag group
Partner Logos burk

ISO 9001:2015

We are committed to ensuring our products consistently meet our customers’ needs, as well as applicable statutory and regulatory requirements. Our ISO 9001:2015 certification acknowledges our robust quality management system as we strive for continuous improvement.


Download the Certificate of Registration

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Our Charitable Donations

We believe that being a good business partner and being a good community member go hand in hand. The following are some of the causes that CEMSI has proudly supported over the years.

Speak with a Rep

From customized systems to expert support, we’re ready to help.


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We have in-depth product knowledge to build the best solutions possible.


Whether remote or on-site, we offer expert support for  your process analytics and emission monitoring needs.


When off-the-shelf won’t cut it, we have the know-how to deliver
customized solutions.