Spores of puffball fungus Lycoperdon pyriforme as a reference standard of stable monodisperse aerosol for calibration of optical instruments
Fig 4
The particle size distribution immediately after atomization (blue) and after 14 min (pink) in the air.
(A) Al2O3 particles. Distribution has shifted towards larger particle sizes, indicating that coagulation has occurred. (B) PSL microspheres. The size distribution narrowed and the mean Sauter diameter decreased because the water covering the spheres had evaporated. (C) Fungal spores. The size distribution showed no considerable change, suggesting that nor coagulation, nor settling had occur.