Dekati® eDiluter™ Pro


Dekati® eDiluter™ Pro is a portable dilution system that allows easy sample conditioning for a wide range of particle measurement applications. Its compact structure includes a two-stage dilution system with an adjustable dilution factor ranging from 1:25 to 1:225. The high sample output of the Dekati® eDiluter™ Pro allows the system to be fully integrated with all Dekati® Instruments and is also compatible with all other commercially available measurement instruments.

The operating principle of the Dekati® eDiluter™ Pro is based on two-stage dilution. The first stage is heated while the second dilution stage operates at room temperature where the aerosol sample is also cooled in a controlled manner. Both dilution stages consist of an ejector diluter with additional sheath air flow. The use of a large ejector nozzle and sheath air reduces the need for cleaning, and also minimizes particle losses within the system. Built-in sensors constantly monitor the dilution process parameters and an integrated control unit actively compensates for any fluctuations in the sample inlet pressure ensuring that the selected dilution factor is kept constant under all conditions.



  • Portable two-stage dilution system for particle measurement applications
  • Suitable for high temperature applications up to 1200 °C
  • Adjustable dilution factor 1:25-1:225
  • Adjustable dilution temperature up to 400 °C
  • Stable dilution factor even in variable sample pressure conditions
  • Different dilution factor settings have minor effect on the inlet flow rate
  • High output sample flow, up to 80 lpm
  • Dilution factor not affected by the flow drawn to measurement instruments
  • Two additional, integrated temperature controllers for regulating the temperature of external heaters such as heated sampling line and heated sampling probe
  • Option for remote control and monitoring of dilution parameters
  • Complete measurement setups available for engine exhaust measurements and stationary source samplings
  • Each unit individually calibrated and provided with a calibration certificate



  • Stationary source emission measurements
  • Vehicle exhaust measurements
  • Blow-by gas emission measurements
  • Brake-wear emission measurements
  • Can be used to dilute aerosol sample from practically any source