ACS always supplies products with accuracy, reliability, and serviceability in mind. Our EPA compliant monitors are built with the highest quality optics available and are matched with an industry leading warranty and support. Our EPA compliant Opacity Monitors are guaranteed to exceed EPA 40 CFR 60 Performance Specification 1 for Opacity Monitors as well as ASTM D 6216.

Our Opacity Monitors are selected to be the optimal choice for a variety of applications. From power generating facilities to paper mills and cement plants, customers worldwide have relied on our monitors for over 30 years to accurately monitor their processes.