The UHSAS is an optical-scattering, laser-based aerosol particle spectrometer for sizing particles in the 0.06 – 1 µm range. The instrument counts particles in up to 100 user-specified sizing bins, with a resolution as fine as 1 nm/bin. This high sensitivity makes the UHSAS ideal for aerosol research and filter testingAethalometer is used for the real-time measurement of aerosol Black Carbon. The Model AE33 Aethalometer offers real‐time aerosol absorption analysis at seven optical wavelengths, with time resolution to 1 second. This permits the measurement of optically‐absorbing aerosols – ‘Black’ Carbon and ‘Brown’ Carbon components of particulate matter – in applications including routine monitoring of ambient air quality for regulatory purposes; measurements of the concentration of BC in urban, suburban, regional, rural and remote locations; source testing; and laboratory‐based research. | 