890b488c_oplet_Measurement_Technologies__Parameter
[Specification] DMT recommends calibrating the SP2 every six months and/or before and after every field campaign. The incandescence measurement is calibrated to black carbon mass using DMA-sized Aquadag, fullerene soot or glassy carbon. (DMA refers to differential mobility analyzer, used to extract particles of a single electrical mobility size from a polydisperse aerosol.) The scattering measurement is calibrated to particle size using monodisperse polystyrene latex (PSL) spheres or DMA-sized ammonium sulfate. DMT offers free software that automates much of the calibration process. The Probe Analysis Package for Igor (PAPI) assists the user in loading, consolidating, and analyzing calibration data files. [Parameter] 
Calibration
Single Particle Soot Photometer (SP2) | Droplet Measurement Technologies
Parameter