The new Model 211 Scrubberless Ozone Monitor uses the proven ultraviolet (UV) absorption method in combination with an innovative gas-phase scrubber technology to measure ozone virtually free from interferences. The Model 211 is ideally suited for measurements of ozone in heavily polluted air where interferences from particulates, mercury and VOCs may be significant. The new Model 211 combines the stability of our Model 205 Dual Beam Ozone Monitor with our selective scrubber technology to provide highly accurate ozone measurements in the most polluted air. The Model 211 has been designed by the EPA as a Federal Equivalent Method (FEM) and is being considered as new Federal Reference Method (FRM) for ozone.
