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1nm Scanning Mobility Particle Sizer Spectrometer 3938E57

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Take your measurements to the limit of detection with the 2 nd generation of 1-nm particle sizing. For more than 30 years, TSI's SMPS™ spectrometers have been widely used as the standard for measuring aerosol size distributions in the submicrometer and low nanometer size range. With the addition of the Model 3757 Nano Enhancer and Model 3086 Differential Mobility Analyzer (1nm-DMA), one can now measure the size and number concentration with high resolution and speed, and monitor reaction kinetics and new particle formation of engineered and natural aerosol particles as small as 1 nm.


Product Details

The 1 nm SMPS system combines TSI's historical strengths in particle classification and counting, with new technology that permits the measurement of particles as small as 1 nm. The optimized Model 3086 DMA further reduces diffusional losses of those smallest of particles. Between the DMA and a standard CPC, the Model 3757 NanoEnhancer uses diethylene glycol to pre-grow 1 nm particles to enable detection by the CPC. The new Nano Enhancer design tightens the integration between CPC and Nano Enhancer and makes the setup and system use much easier.

Combined these components allow researchers to move particle research into exciting new territory. Key applications are:

Atmospheric Research - Monitor new particle formation and kinetics, cloud condensation, and close the gap between mass spectrometer and conventional particle size distribution measurements. Ideal for studies on sub-3nm particles in highly polluted cities, particle sources and health effects studies.

Material Science - Monitor and characterize sub-3 nm particles with reliable, near real-time feedback. This system is ideal for aerosol-based engineered nanoparticle synthesis, nanoparticle functionalization, nanoscale analytical chemistry, control of reaction kinetics and catalyst synthesis.


  • Fast, high resolution data on size and number concentrations
    • Optimized for minimal diffusion losses
    • > 109 channels between 1 and 50 nm
    • Ability to measure over three decades of size, from 1 nm to 1 µm, with the addition of the 3081A Long DMA
  • Modular component design for customization to best fit the measurement needs, e.g. stand-alone use of the 1nm CPC
  • Built-in diagnostics and auto detection of system components for reliable and reputable measurement data
  • Easy to setup and use with Aerosol Instrument Manager (AIM) Software
  • Discreet particle measurement: works well for multimodal samples

The 1nm SMPS is not just another detector that observes nucleation bursts from 1 nm on; it is a full-blown particle spectrometer that shows which size distributions exist during these events, with an unmatched resolution.

The modularity of components makes it easy to customize the system to best fit your measurement needs: saving you time and money. If you already own one of the 3938-series SMPS systems configured with a 3750 CPC, you only need to add the 1nm-DMA and the Nano Enhancer. Your Classifier and Advanced Neutralizer will remain the same, and you will get a free-of-charge update to the latest version of AIM software.


  • Fundamental aerosol research
  • Study of particle nucleation and particle growth, from particle sources such as flame synthesis, laser ablation, spark generation and nucleation/condensation
  • Combustion and engine exhaust research, (organic fuels, sub-3nm emissions, natural gas engines, plastic molding and soldering)
  • Filtration research
  • Inhalation or exposure chamber studies
  • Health effects studies

*The Features & Benefits assume an SMPS spectrometer consisting of: 3082 Classifier , 1nm-DMA , Model 3757 Nano Enhancer , andModel 3750 Condensation Particle Counter.




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