Dekati® DLPI+ Low-Pressure Impactor

Air particulate monitors

The Dekati® DLPI+ low-pressure impactor is 14-stage cascade impactor used to determine airborne particle mass size distribution. It classifies and collects particles into 14 size fractions in a 16 nm – 10 μm range. In each size fraction, particles are collected on 25mm collection substrates that are weighed before and after measurement to calculate gravimetric size distribution. It can also perform a chemical analysis of the size classified particles.

It shares its impactor design with the Dekati® ELPI®+ (Electrical Low-Pressure Impactor) so can be easily upgraded into a full ELPI®+ system for real-time particle size distribution measurements.

A high temperature (HT) version is available that can be heated up to 180 °C for direct sampling of high temperature aerosols.

Acoem Australasia (Ecotech Pty Ltd) is the official distributor for Dekati fine particle measurement instruments in Australia and New Zealand.



Gravimetric or chemical analysis of size classified sample
10 lpm sample flow rate
Particle size distribution in 14 size fractions 16 nm – 10 μm
Particle collection area Ø25 mm
Well characterised impactor
Has low interstage particle losses
Real-time data
Can be upgraded into a complete ELPI®+ system
No flow control needed
Integrated impactor low pressure (40 mbar) measurement and adjustment

See our technology in action

Schedule a free demo to get a first-hand look at how our solutions support your business.


  • occupational health and safety studies
  • engine exhaust monitoring
  • blow-by gas emissions
  • combustion process studies
  • air quality and nanoparticle measurements

Air Particulate Monitors


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