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ATM 228

Atomizer Aerosol Generator ATM 228 for aerosol generation from liquids for mobile use, integrated compressor, pneumitic-controlled, remote controllable

The aerosol generator ATM 228 is a further development of the aerosol generator ATM 226 and serves for the mobile generation of test and calibration aerosols from pure liquids, solutions and suspensions. The generator complies to all requirements of VDI 3491-2.
Atomizer Aerosol Generator ATM 228 frontside Atomizer Aerosol Generator ATM 228 frontside, with cable Clean Room Validation Equipment
Aerosol generation is realised by a brushless compressor. Accordingly, no external compressed air supply is required. For the purpose of reproducible and long-term stable aerosol generation, the air flow rate is controlled via the pressure drop over the nozzle. This allows also a reproducible and stable generator operation even at very low air flow rates and thus also at lowest particle production rates.


VDI 3491-2
VDI 4258-1
ISO 14644-3
DIN EN 12469
DIN 12980
ISO 21083-1
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  • stable aerosol generation even at lowest particle production rates
  • safe and reproducible adjustment of operating points
  • suitable for mobile operation (internal compressor, optional battery operation mode)
  • remote control via serial interface (optional)


  • aerosol generation from pure liquids, solutions and suspensions
  • integrity and recovery testing of HEPA/ULPA filters according to ISO 14644-3
  • acceptance measurements for clean rooms, safety work benches and smoke detectors
  • generation of calibration aerosols (e.g.: for particle counters) at low air flow rates

For the dispersion of the substance to be aerosolised (aerosol substance), the ATM 228 is equipped with a two-substance nozzle designed by the Topas GmbH. The nozzle is operated within or above the aerosol substance (submerged or non-submerged operation mode) and consists of two inlet ports for the supply of air as well as aerosol substance and one outlet port for the generated primary aerosol.

The supply of a defined air flow rate causes a negative pressure at the nozzle inlet port for the aerosol substance. The aerosol substance flows thus into the dispersion zone of the nozzle, where aerosol substance and gas flow converge and form a droplet aerosol.

Parameter title Unit Value
setting parameter hPa differential nozzle pressure
setting range hPa 0 ... 1400
setting resolution hPa 1 (≤ 50), 5 (> 50)
setting method - manual, controlled
aerosol, volumetric flow rate L/h 20 ... 250
aerosol, mass flow rate (aerosol substance) g/h 0 ... 1,4
operation medium, gas/air - ambient air (filtered internally)
operation medium, aerosol substance - liquids (DEHS, PAO,...), solutions (NaCl, KCl,...), suspensions (PSL,...)
operating medium, aerosol substance - filling volume mL max. 80
power supply - 100 ... 240 V AC, 12 V DC (optional battery operation)
hose connector, outlet mm Ø 8
power consumption W max. 36
environmental condition, max. counterpressure kPa 20
dimensions (w x h x d) mm 195 x 120 x 300
weight kg 3,9
  • Weng C.-H., Chiu P.-W., Kao C.-L., Lin Y.-Y. and Lin C.-H. Combating COVID-19 during airway management: Validation of a protection tent for containing aerosols and droplets Appl. Sci. 11 (2021) 16, 7245
  • Özyurt O. Methods of classifying aerosol types by using scattering of light 2022 International Conference on INnovations in Intelligent SysTems and Applications (INISTA). 0 (2022) 0, 1 - 6

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