Atomizer Aerosol Generators ATM 220 and ATM 226 Polydisperse aerosol mainly below 1µm Excellent constant particle size distribution Defined and high particle number concentration ATM 226 with stainless steel housing Applications Atomizer Aerosol Generator ATM 226 Testing of HEPA and ULPA filter media Atomizer aerosol generators of series ATM 220 and ATM 226 provide generation of test aerosols with defined properties (according VDI-guideline 3491). Its design and technical solution warrants highly constant particle size distribution as well as particle concentration with high reproducibility. The generators enable to atomize various liquids, for example DEHS, PAO (Emery 3004) and saline solutions. The aerosol generators can also be used for generation of PSL-standards. The generator ATM 220 is designed as an instrument with external compressed air supply, whereas the ATM 226 has a low-noise compressor producing the compressed air. All aerosol generators are characterised by compact and robust design. Operating controls, connectors and indicators are so installed, that the instrument can be easily and safe operated. With its stainless steel housing the ATM 226 is excellent qualified for measurements in clean room environments. Clean room measurements and certification of laminar flow boxes Generation of tracer particle at low flow rates Adjustable Particle Production Rate The adjustment of the volumetric flow rate can be done for ATM 226 with the integrated needle valve and is shown on the integrated flow meter. Lower volumetric flow rates will lead to a reduced particle production rate. Compressed air operated atomizer aerosol generators of series ATM can vary the particle production rate by regulation of nozzle pressure. Atomizer Aerosol Generator ATM 220

Generation of Aerosol with DEHS For evaluation measurements of cleanrooms and similar facilities DEHS (Di-2-Ethylhexyl-Sebacate)aerosol is often used. Atomizer aerosol generators of series ATM produce DEHS-aerosols with most particles in the size range of the MPPS (Most Penetration Particle Size, 0.2…0.3µm). DEHS-aerosols are characterised by very long life times. Latex Aerosol Aerosol generators of series ATM are likewise suitable for generation of monodisperse PSLaerosols. These are applied for instance for calibration of aerosol measuring devices or for scientific analysis. The operational...