Airy Technology P311 Handheld Particle Counter

SKU P311
  • Measures 0.3 μm to 5.0 μm
  • 0.1 CFM (2.83 LPM) flow rate
  • Measures 3 channels of simultaneous data
  • Weighs only 1.26 lb (0.57 kg)
  • Long life laser diode
  • USB output
  • Removable and rechargeable AA batteries
  • Includes carrying case, battery charger and download software
  • Stores up to 8,000 sample records and 199 sample locations
  • View data recorded on-screen or via computer
  • Large LCD display
  • Concentration limit of 4,000,000 per ft³
  • Complies with ISO 21501-4 and JIS B9921 standards
  • Lightweight high-impact injection molded plastic enclosure
  • Easy to clean and wipe down
  • 1 year limited warranty
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The Airy Technology P311 handheld particle counter measures 0.3 μm to 5.0 μm with a flow rate of 0.1 CFM (2.83 LPM). Only 1.26 lb (0.57 kg), user-friendly and easy to configure, this handheld particle counter displays up to 3 size channels on its 3.5” LCD display. The Airy Technology P311 stores 8,000 sample records that can be viewed on the unit or on a computer via USB cable. The P311 complies with ISO 21501-4 and includes a one year warranty. With excellent quality and reliable performance, the Airy Technology P311 is the best priced handheld particle counter in the market.



  • ISO Cleanroom Certification
  • Point Measurements
  • Particle Source Investigation
  • USP 797 Particle Monitoring


  • IAQ Investigations
  • Particle Source Investigations
  • Filter Testing
  • Air Cleaner Effectiveness Testing


Airy Technology Laser Particle Counter Model P311

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