Properties such as strength, chemical reactivity, opacity, fluidity and material strength in materials depend on the grain size characteristics of the materials. Mie Theory is used to measure the size of small grains. Mie Theory considers both the refraction and the transmittance of light around the grain size in the medium. In order to use the Mie model, the refractive indices of both the sample and the medium must be known.

Instrument: Malvern Mastersizer 2000

Specifications

• Grain size range: 0.02 to 2000 microns (depends on material properties)
•      Measuring principle : Mie scattering
•      Detector system: Red light: front scatter, edge scatter, back scatter. Blue light: Wide-angle front and back scatter.
•      Light source: Red light: Helium neon laser. Red light: Solid state light source

Sample Requirements

• Solids and colloids, emulsions, dry powder and powder masses dispersed in liquid.
•      Approximately 10 g of sample is required for the dry method.
•      For the wet method, 200 mg is required.

Applications

• Ceramics
• Powder Metallurgy
• Mineral processes
• Powder food products
• Inks