The Mastersizer 2000 uses light scattering to measure the size and size distribution of particles or emulsions in a liquid medium. Using Mie theory the Mastersizer is able to provide results in the form of volume and number data in addition to the intensity data obtained. Mie theory was developed to predict the way that light passes through, or is adsorbed by, the particle. To do this it assumes that the user knows the refractive index and optical absorption of the material. The Mastersizer 2000 can measure particle sizes from 20 nm to 2 mm.
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