The aerosol generator ATM 225 is used for generating test aerosols with defined properties. The number concentration of the aerosol particles can be set. From the determined concentration distributions of the produced DEHS aerosol it becomes evident that in the range of expected MPPS (Most Penetration Particle 0.2-0.3 μm) a very high particle concentration is provided (> 107 particles/cm3). In the measuring range of many optical particle counters (> 0.3-0.5 μm) a particle number (0.5 x 106 l particles/cm3) is generated in line with the requirements. The design and technological features of the device ensure a high stability of particle size distribution and particle concentration. The generated aerosol is thus very well reproducible.
