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ATM 231

Atomizer Aerosol Generator ATM 231 for aerosol generation from liquids, compressed air operated, submerged nozzle, high mass flow rates

The Atomizer Aerosol Generator ATM 231 produces droplet aerosols with known properties according to the guideline VDI 3491-2.
Atomizer Aerosol Generator ATM 231, front view
The ATM 231 is designed as a serial instrument with external compressed air supply. The liquid resservoir arranged within the housing.

The ATM 231 provides a moderat aerosol output for long operation time. Its design and technical solution warrants highly constant particle size distributions as well as particle concentrations with high reproducibility.

The ATM 231 is able to aerosolise various liquids, for example PAO (Emery 3004), DEHS, salt solutions, PSL-standards suspensions.


VDI 3491-2
VDI 4258-1
EN 779
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  • polydisperse aerosol, mainly submicron (< 1 µm)
  • excellent stability i generation of particle size distribution and concentration
  • by varyation of the nozzle pressure, the production rate can be adjusted in wide range


  • testing of HEPA and ULPA filter media
  • visualization of air flows (tracer particles)

The ATM 231 is equipped with a Laskin nozzle for aerosol generation. The required compressed air is HEPA filtered.

Parameter title Unit Value
setting parameter - system pressure
setting range bar max. 0,25
setting resolution - continously adjustable
setting method - manual
aerosol, volumetric flow rate L/h 800 ... 1700
aerosol, mass flow rate (aerosol substance) g/h max. 3,5
operating medium, aerosol substance - pure liquids (DEHS, PAO, DOP, ...), solutions (salts, ...), suspensions (PSL, ...)
operating medium, aerosol substance - filling volume mL 100 ... 500
operating medium, gas/air - dry, particle-free compressed air or compressed inert gas
operating medium, gas/air - compressed air supply bar max. 2,5
environmental condition, max. counterpressure kPa 20
hose connector, outlet mm Ø 11 (Innendurchmesser), Ø 14 (Außendurchmesser)
aerosol generation principle - submerged laskin nozzle
dimensions (w × h × d) mm 230 × 225 × 380
weight kg 4,5

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Atomizer Aerosol Generator ATM 230, frontal view
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Atomizer Aerosol Generator ATM 221, front view
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