Mobility particle size spectrometers are instruments capable of determining sub-micrometer particle number size distributions. Their fundamental principle is the separation of particles in an electric field, based on different electrical mobilities.
At TROPOS, he have been developing the following variants of mobility particle size spectrometers:
- SMPS (Scanning Mobility Particle Sizer), diameter range 10-800 nm
- TDMPS (Twin Differential Mobility Particle Sizer), diameter range 3-800 nm
- TSMPS (Twin Scanning Mobility Particle Sizer), diameter range 3-800 nm
TROPOS has developed these instruments for many years, harmonising their instrumental set-up, and continuously improving their reliability, long-term stability, and performance characteristics. A main goal is to provide instruments that are useful for long-term monitoring at globally spread atmospheric research stations.