Landscape of lake, forest and blue sky.

Compliance Opacity Monitors

Opacity is measured by the amount of light attenuation caused by light scattering of the beam by particles in the light path. The COMS Analyzers are designed to meet EPA Performance Standard 1 Procedure 3, and ASTM D6216 requirements, all built around Double Pass Transmissometry with L.E.D. lightsource transmittance.


CII provides several manufacturer analyzers for our customer compliant needs, all meet or exceed the regulatory standards with their Ultra-Low Level capability:

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