Aerosol Dispersion Studies


Measuring aerosol evolution from a quick burst of aerosol can be challenging as the characteristics of the particles may vary significantly during the spray, dispersion and deposition of the aerosol. These type of fast changing aerosols can be generated in various different processes and the measurement applications can vary from human sneezing to medical inhalers and electrosprays. The requirements for the measurement instrument, however, are similar; real-time, fast detection, accuracy and broad particle size range.

The Dekati ELPI®+ and High Resolution ELPI®+ are powerful tools in dispersion research with 10 Hz time resolution and wide size range from 6 nm up to 10 µm. This complete size range is measured with one measurement technology and one instrument. The complete selection of our particle measurement instruments include both real-time instruments such as the ELPI®+ instruments and gravimetric cascade impactors for particle aerodynamic size distribution and concentration measurements. We have over 25 years of experience in real-time aerosol measurements and today, our instruments are used globally by thousands of customers both in research and industry to measure different properties of airborne particles <10 µm.

Applications for Dekati® instruments

  • Aerosol dispersion of respirable droplets
  • Studies on bioaerosol generation from sinks and faucets
  • Lung deposition studies
  • Filtration research
  • Medical inhalation aerosol measurements (e.g. MDI and DPI measurements)
  • E-cigarettes, vaping and formulation studies
  • Ambient eddy covariance flux studies
  • Studies on aerosol charge state effects
  • Filtration of radioactive aerosols
  • Aerosol generation from nuclear steam ruptures

Spray and dispersion

Aerosol Dispersion Measurement

HR-ELPI®+ measurement result from an industrial process

Aerosol dispersion research with Dekati® Products

  • Wide measurement size range from 6 nm to 10 µm in up to 500 size fractions with a single measurement principle and one instrument
  • Real-time measurement up to 10 Hz
  • Wide dynamic concentration range covering over 5 orders of magnitude with one instrument
  • Options for particle mass, particle number, and lung-deposited surface area (LDSA) measurements
  • Options for measuring particle charge levels in different size fractions
  • Options for real-time or gravimetric size distribution measurements with cascade impactors
  • Additional options for chemical or biological analysis of the size classified particles
  • Long term measurements without maintenance
  • Capability to measure in 100%RH and in elevated temperatures up to 200 °C

Related applications