Scanning Mobility Particle Sizer (SMPS)

PI Nikos Mihalopoulos
Operators: Katerina Bougiatioti, Iasonas Stavroulas
Participant University of Crete
Instrument picture

The Scanning Mobility Particle Sizer (SMPS; TSI Model 3034) provides total particle number size distributions in the diameter range of 10 to 487 nm by separating particles based on their electrical mobility. Particles of a selected size are detected optically; small particle visibility is enhanced by the growth of the particles in a condensing butanol vapor. Particle counting, to determine particle concentration, is performed by passing separated particles through a focused laser light source, where scattered light is detected using a photo-detector. The entire system is automated, with a sheath-to-aerosol flow ratio of 4:1 liters per minute. The time resolution of the measurement is 5 minutes.

Instrument activity

Recent measurements

No measurements found.


The campaign is organized and funded through the ACTRIS, the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases.