Cloud Condensation Nuclei Counter (CCN): Aerosol particles that can form into cloud droplets are an important component of the atmosphere. These particles are called cloud condensation nuclei (CCN). The DMT CCN counter measures the concentration of these particles and can be operated on the ground or on aircraft. The DMT CCN counter is being used in laboratories to measure how different materials form cloud droplets, in urban environments to study how pollution affects cloud and precipitation formation, and in weather modification to determine when and where to seed clouds. This popular instrument comes equipped with single (CCN-100) or dual (CCN-200) columns for extended versatility. read more =>

Ultra-High Sensitivity Aerosol Spectrometer (UHSAS): This 100 channel (programmable) optical spectrometer measures aerosol particles in the range from 0.055 µm to 1 µm. read more =>

Photo-Acoustic Soot Spectrometer, Single-Wavelength (PASS-1): The PASS-1 is a sensitive, high-resolution, fast-response instrument for measuring the absorption coefficient of aerosol particles. This instrument has no filters to change and requires no intervention by the operator. The PASS is ideal for air quality and biomass burning studies, as well as for documenting pollution plumes from power plants, urban areas or other sources of black carbon emissions such as diesel exhaust emissions. read more =>

Photo-Acoustic Soot Spectrometer, Three Wavelength (PASS-3): The PASS-3 is a sensitive, high-resolution, fast-response instrument for measuring the absorption coefficient of aerosol particles. It uses three wavelengths (red, green, and blue) to enhance measurement capabilities.read more =>

Single Particle Soot Photometer (SP2): This is the only instrument in the world that directly measures the black carbon, known as soot, in individual aerosol particles. The high sensitivity, fast response, and specificity to elemental carbon makes it the premier instrument for characterizing pollution sources, soot in snow, ice or water, calibrating aethalometers and documenting thin, atmospheric layers of contamination. read more =>

Fog Monitor (FM-100): This optical spectrometer continuously samples droplet-laden ambient air and produces size distributions in the range from 2 - 50 µm. This all-weather instrument is popular on fog monitoring towers, droplet characterization in visibility studies and for evaluation of the super-cooled droplets that lead to highway and power line icing. read more =>

Meteorological Particle Spectrometer (MPS): This precipitation-measuring optical disdrometer, used by the National Weather Service for rain and drizzle research, measures the size distribution, fall velocity and rain rate of droplets from 50 µm to greater than 6.4 mm. read more =>

Passive Cavity Aerosol Spectrometer Probe (PCASP-X2): This optical spectrometer measures small particles in the 0.10 - 10.0 µm diameter range. Updated electronics have enhanced the probe's sizing resolution and data system interface.read more =>