AETHALOMETER (AE33).

Aethalometer® AE33, two sample spots are collected from the same input air stream with different accumulation rates and analyzed simultaneously.  The two results are combined mathematically to eliminate the “Filter Loading Effect” nonlinearity and accurately measure the aerosol concentration. Additionally, the analysis is made at 7 optical wavelengths spanning the spectrum from 370 nm to 950 nm.  Increases in optical absorption at shorter wavelengths may be interpreted in terms of the presence of so-called “Brown” carbonaceous material, usually an indicator of emissions from biomass combustion.