TSI 3776 Ultrafine Condensation Particle Counter

TSI 3776 Ultrafine Condensation Particle Counter

The TSI 3776 Ultrafine Condensation Particle Counter (UCPC) is designed primarily for researchers interested in airborne particles smaller than 20 nm. It is a continuous-flow instrument that detects particles down to 2.5 nm. It uses a special sheath-air flow design that improves response to changes in particle concentration and increases counting efficiency for ultrafine particles.

The successor to our 3025A, the 3776 has a higher aerosol flow rate and better flow control. It features extended single particle counting with a continuous, live-time coincidence correction up to 300,000 particles/cm3. It has a butanol-friendly, anti-spill design with water-removal capability. It includes a colour display, built-in data logging and storage capabilities with a removable memory card, and USB and Ethernet connectors. It comes SMPS™-ready, right from the factory, and it includes our Aerosol Instrument Manager® software.


  • Lower particle detection size limit of 2.5 nm
  • Fast response to rapid changes in aerosol concentration (T95
  • Higher aerosol flow rate of 50 cm3/min for improved counting statistics
  • Extended single particle counting up to 300,000 particles/cm3 with continuous, live-time coincidence correction for maximum accuracy
  • Butanol-friendly features, including anti-spill design, water-removal system, butanol odor absorber, and improved resistance to optics flooding after tilt of instrument or inlet flow restriction
  • 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, plots of concentration versus time, total counts, or instrument status shown on front-panel color LCD display


  • Atmospheric and climate research
  • Particle formation and growth studies
  • Combustion and engine exhaust research
  • Nanotechnology research