Particle Sizing via Dynamic Light Scattering (DLS)
Used for nano-particle characterization, Dynamic light scattering determines particle size by measuring the changes in intensity of light that is scattered from the Brownain motion of diffusing particles in a liquid suspension or solution. The larger the particle the slower the Brownian motion. Preferred method for more highly particle concentrated solutions than static light scattering measurements.
The Laser Light Scattering Technique utilizes Mie and Fraunhofer Theories to determine particle size distribution from a light scattering pattern. The smaller the particles the higher the contribution of refraction and absorption to the static light scattering pattern. The typical range of measurement is 0.02 um to 2000 um.
- Micromeritics Saturn High Resolution DigiSizer
- Malvern Mastersizer 3000
- Malvern Mastersizer 2000