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Condensation Particle Counter 3772

Recommended Replacement


This product has been discontinued as of March 31, 2018. Click here to see its replacement: Condensation Particle Counter 3750

Condensation Particle Counter Model 3772 is a compact, rugged, and full-featured instrument that detects airborne particles down to 10 nm at an aerosol flow rate of 1.0 L/min, over a concentration range from 0 to 10 4 particles/cm 3 . It is ideally suited for applications that do not require measurement of high concentrations.

Product Details

The successor to our Model 3010, this value-priced CPC offers features found on our top-of-the-line CPCs. Like a front-panel display, anti-spill design, water-removal capability, built-in data logging and storage with removable memory card, and USB and Ethernet ports. Plus, the 3772 has built-in Scanning Mobility Particle Sizer™ (SMPS™) spectrometer compatibility, and it includes our Aerosol Instrument Manager™ software. It requires an external vacuum pump, available separately.


Features and Benefits

  • 10 nm sensitivity at 1.0 L/min aerosol flow rate
  • Fast response to rapid changes in aerosol concentration (T 95@ 3 sec)
  • Measures particle concentrations up to 10 4 particles/cm 3
  • Butanol-friendly features, including anti-spill design, water-removal system, and improved resistance to flooding of optics
  • Built-in data logging and storage capability with removable memory card
  • USB and Ethernet available
  • Built-in SMPS compatibility (Now standard!)
  • Auto recovery from power failure
  • Removable saturator wick for easy transport and maintenance
  • Particle concentration, total counts, or instrument status shown on front-panel LCD display


  • Basic aerosol research
  • Filter and air cleaner testing
  • Particle counter calibration
  • Environmental monitoring
  • Mobile aerosol studies
  • Particle shedding and component tests
  • Atmospheric research
  • Climate studies

  • Can the CPC be operated with different carrier gases?
    Yes, but only inert gases.
  • Is the counting efficiency for each CPC determined individually?
    No. The CPC efficiency curve has been determined by testing a statistically valid number of CPCs and averaging the results to obtain the curve published in the product literature. Variation between units is very small. 
  • What is the final droplet size after growth by condensation?
    This question has been investigated, theoretically, by Ahn and Liu (1990). For the initial particle diameters of 5 and 20 nm, the computation results show a final droplet size of 11.3 and 12.3 micrometers, respectively (Ahn and Liu, 1990). Similar experimental results have also been determined.

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