TSI 3330 Optical Particle Sizer

TSI 3330 Optical Particle Sizer

The TSI 3330 Optical Particle Sizer is a light, portable unit that provides fast and accurate measurement of particle concentration and particle size distribution using single particle counting technology. Backed by over 40 years of aerosol instrumentation design experience, the OPS uses state-of-the-art optics with 120° light collection and sophisticated electronics processing resulting in precision, high quality data. Rigorous factory calibration standards ensure measurement accuracy. The 3330 particle sizers can be used alone, or it can be placed in TSI’s weatherproof Environmental Enclosure.

The new 3914 now combines the NanoScan SMPS and the Optical Particle Sizer to measure three orders of size magnitude from 10 nm to 10 μm using these affordable, portable, real-time instruments.


  • Size resolution < 5% at 0.5 μm
  • User adjustable size channels
  • Size range: 0.3 – 10 μm in up to 16 channels
  • Wide concentration range from 0 to 3,000 particles/cm 3
  • Color touch screen with intuitive user interface
  • Fully compliant with ISO 21501-04
  • Displays particle number concentration and particle mass with the ability to input refractive index and particle density
  • Filter-based sample collection for later gravimetric or chemical analysis
  • Battery-powered for up to 12 hours of operation
  • Built-in data logging capability for up to 30,000 samples
  • Includes Aerosol Instrument Manager™ Software and a variety of standard accessories
  • Multi-Instrument Manager Software for use with the NanoScan SMPS Model 3910


  • Filter testing (i.e. ASHRAE 52.2)
  • Indoor air quality
  • Work place monitoring
  • Outdoor environmental monitoring
  • Industrial measurements
  • Emissions monitoring and control