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Aerocet 831 Handheld Particle Counter - Met One Instruments

Aerocet 831 Handheld Aerosol Mass Monitor

The Aerocet 831 is a completely portable, full–featured, battery operated, handheld mass monitor. This device simultaneously provides five critical mass ranges (PM1, PM2.5, PM4, PM10 & TSP) in one minute from start up. Survey the environment with the easy to use, extremely portable, size selective Aerocet 831. Weighing only 28 ounces, this compact instrument is the perfect tool for a wide range of assessment applications.

Operations / Interface

Met One Instruments’ Aerocet 831 is simple to operate with two front-panel buttons used with the multifunction rotary scroll wheel to provide user friendly and efficient operation. Just press and rotate to scroll thru the menu driven platform. With the Aerocet 831 one can view sample history easily on the display or export data via the USB port using the included COMET software. The 831 stores up to 2500 sample events. The USB interface provides quick data downloads and field firmware upgrades. The Aerocet 831 provides up to 24 hours of typical intermittent operation or 8 hours of continuous use. Recharge time is only 2.5 hours. The included AC charger / adapter operates the counter even when the battery pack is discharged.


  • Five Mass Ranges (PM1, PM2.5, PM4, PM10 & TSP)
  • Handheld Operation
  • Sample History
  • Low Cost w/ Data Logging
  • Battery Powered
  • 1-Year Warranty



  • Operation Manual
  • Battery Charger / Adapter
  • USB Cable
  • Comet Software
  • NIST Certificate of Calibration


  • Carrying Case (P/N 8517)
  • Protective Boot (P/N 80450)
  • Zero Filter Kit (P/N 80846)
  • Flow Meter Kit (P/N 80530)

🔗 See the Aerocet 831 in action! Read our article BACK TO SCHOOL: How Does Air Quality Affect our Children’s Health & Ability to Learn at School?


Specifications are subject to change at any time.
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