Aerosol size distributions were measured with
Scanning Mobility Particle Sizer (SMPS) consisting of a long Differential Mobility Analyser (DMA, TSI 3081) column and CPC (TSI 3010) and the TSI controller (3080)
The SMPS measured the aerosol size distribution of particles in the range 15 to 736 nm
Size distributions were measured over 2.5 minute intervals.
Both the Long -SMPS was run with aerosol flows of 0.30  0.03 L min-1 and sheath flows of 3.0  0.3 L min-1. 
Sizing accuracy of the both  SMPS systems was checked using Polystyrene Latex (PSL) solution with errors being less than 2 %.
The counting efficiency of the SMPS was determined by comparing the total number concentration of particles greater than 14 nm with the particle number concentration measured using the CPC TSI3772 and a scaling factor determined.  The SMPS was then scaled to the scaling factor.
Diameter units are nm
Concentrations units dN/dLogdp particles cm-3 

Contact person: Melita Keywood melita.keywood@csiro.au