TSI 3938 SMPS Scanning Mobility Particle Size Spectrometer

The TSI 3938 Scanning Mobility Particle Size Spectrometer (SMPS) is widely used as the standard for measuring airborne particle size distributions. This system is also routinely used to make accurate nanoparticle size measurements of particles suspended in liquids. The National Institute of Standards and Technology (NIST) uses a TSI DMA to size 60 nm and 100 nm standard size reference materials. SMPS spectrometer sizing is a discreet technique in which number concentrations are measured directly without assuming the shape of the particle size distribution. The method is independent of the refractive index of the particle or fluid, and has a high degree of absolute sizing accuracy and measurement repeatability. TSI’s Model 3938 is the 3rd generation of SMP, trusted by researchers for over 30 years.

Additional Information

Features

High resolution data: up to 167 channels
Broad size range: from 1 nm to 1,000 nm
ISO 15900:2009 compliant
Fast measurements:
Wide concentration range up 10⁷ particles/cm³
Component design for maximum flexibility
Touch-screen control with no computer needed for operation
Easy setup with tool-less installation and auto discovery of components
Discreet particle measurement: works well for multi-mode samples
Independent of optical properties of the particles and fluid
Wide range of system options: choice of water or butanol CPC; choice of traditional or nonradioactive neutraliser