CEMS Challenge?
ESC Spectrum Can Help

+ 0
Sources Using Our DAS
+ 0
CEMS Shelters Built
+ 0
Reports Filed Yearly
+ 0
Stack Tests Performed

We are passionate about helping industrial
plants comply with clean air regulations by
providing continuous emissions monitoring solutions

Data Acquisition
Systems (DAS)

StackVision and Prism
are industry leaders for
air emissions monitoring
and reporting


Custom-made, high-quality
CEMS integrations, including
shelters, mobile systems and upgrades

Data Controllers &
CEMS Parts

CEMS hardware including
the reliable & robust
8864 Data Controller plus Analyzer & CEMS parts

Expert DAS

Reporting, Engineering and IT professionals are standing by to assist you with your DAS challenges

Professional CEMS

Maintenance, inspection, testing, upgrades, repair, calibration
and training experts
at your service

Air Emissions

RATAView for stack testing
QAInsight for QA/QC tracking
FleXReports for Excel data export & reporting

How to Maintain Your CEMS Analyzers

As your facility’s continuous emissions monitoring systems age, it’s vital to keep up with CEMS analyzers to avoid the potential risks of downtime and fading reliability. Learn more in our latest blog post from The Source.

Discover Upcoming Events

Latest Videos

Latest Posts From The Source Blog

New to CEMS? This One's for You!

New to CEMS? This One’s For You!

Being the new guy in any position can be overwhelming, and that is no exception for the continuous emissions monitoring (CEMS) and environmental compliance world. You may find yourself in a situation you didn’t plan on; maybe you are thrust into a new role or job because someone is out sick, or an unfamiliar assignment lands in your lap. Whatever the reason, there are many resources out there for those new to environmental compliance.

Read More »
RATA Load Analysis

RATA Load Analysis Errors and How to Avoid Them

Load Analysis Errors are usually discovered after a RATA test has been conducted and can lead to hundreds of hours of invalid data. To avoid this error at your facility, learn about some of our best practices to consider when planning your next RATA test.

Read More »