Magee OT21

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The J.J. Wilbur Company is proud to offer the SootScan™ Model OT21 Optical Transmissometer. A bench top analyzer that is a simple and robust instrument which measures the Black Carbon content of an aerosol sample collected on a filter, either from ambient air or from source emissions.

The SootScan™ Model OT21 Optical Transmissometer can analyze aerosol samples quickly and easily in the field or the laboratory, to determine optical attenuation and BC / BrC mass results.  The analysis is performed at two wavelengths (880 nm, definitive for “Black” Carbon; and 370 nm, where enhanced optical absorption may indicate the presence of “Brown” Carbon aerosol derived from biomass combustion.)

The analysis is non-contact, non-contaminating and non-destructive.  It may therefore be performed before other laboratory techniques are applied to the sample.  The analysis method requires no support gases or consumables.  A neutral density photometric standard kit is available for verifying instrument calibration and validating the instrument response.

Apllications

  • Air Quality monitoring

  • Analysis of historical archives

  • Identification of “biomass burning” aerosols

  • Personal exposure monitoring

  • Stack & emission testing

  • Climate change monitoring

Product Benefits

  • 2-Wavelength operation: UV (370nm) & IR (880nm)

  • Non-contact, non-destructive, non-contaminating

  • Accepts 25, 37 or 47 mm diameter filters

  • Analyzes glass fiber, quartz fiber, Teflon filters