High Sample Flow Rate Particle Size Distribution with DGI

DGI-1570 (Dekati® Gravimetric Impactor) is a high sample flow rate cascade impactor designed for measuring gravimetric particle size distribution of particles < 2.5 µm. In a standard DGI setup particles are size classified into 5 size fractions with impactor stage cutpoints of 2.5, 1.0, 0.5 and 0.2 µm. If detailed information on the size distribution is not needed, some of the impactor stages can be removed from the DGI assembly. The impactor can e.g. be used without the 0.5 and 0.2 to stages to determine only PM2.5 and PM1.0 concentrations. The nominal sample flow rate though the DGI is 70 lpm which enables high sample yield even during short measurement periods and in low concentration areas such as work places. The impactor flow rate can be adjusted between 50 and 100 lpm.


DGI features:

  • Particle size distribution in five size fractions <2.5 µm
  • High sample flow rate; each unit calibrated for 50, 60, 70, 80, 90 and 100 lpm
  • Gravimetric, chemical or SEM/TEM analysis of size classified particles
  • Easy-to-use stainless steel construction
  • Complete measurement solutions available from Dekati Ltd.