Standard Opacity and Dust Monitors

EMS has taken the approach to design our products with accuracy, reliability, and serviceability in mind. Our opacity monitors are designed to fit any application and budget. We offer both single and dual-beam measurement options as well as path-length measurements from 24 inches up to 50 feet. The high-quality optics and electronically modulated light source assure accuracy and dependability.

Our industry-leading warranty and support make EMS opacity monitors an ideal choice for all of your opacity monitoring needs. Customers worldwide have relied on Environmental Monitoring Service opacity monitors for more than 20 years.