Aerocet 531S Handheld Particulate Counter

This amazing unit simultaneously measures 6 mass concentration ranges (PM1, PM2.5, PM4, PM7, PM10 and TSP) displayed in mass mode, as well as five popular cumulative particle sizes (> 0.3, 0.5, 1.0, 5.0 and 10.0 microns) in count mode. Using a unique mass conversion, the Aerocet 531S particle counts from eight size ranges which are converted to mass using a proprietary algorithm for typical-density aerosols.


  • 2-in-1 Performance
  • 6 Mass Ranges (PM1, PM2.5, PM4, PM7, PM10 & TSP)
  • Particle Counting & Mass Monitoring Modes
  • Cost Competitive
  • Keypad Selectable Sizes
  • 1-Year Warranty


  • Controlled Environments
  • Indoor Air Quality
  • Process Control
  • HVAC Applications
  • Filter Testing
  • Hospital & Clinics
  • Emission Sourcing
  • Environmental Surveys

*Note: Not recommended for continuous outdoor use.

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