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Lucerne School of Engineering and Architecture Lucerne School of Engineering and Architecture
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Engineering and Technology Engineering and Technology
Thermal Energy Systems and Process Engineering Thermal Energy Systems and Process Engineering
Measurement and Analysis Techniques Measurement and Analysis Techniques
Beckmann-Coulter Counter Beckmann-Coulter Counter

Beckmann-Coulter Counter Analysis of particle sizes through combined laser diffraction and scattering

For liquid based dispersions (suspensions, emulsions or a combination of both), the modern analysis laboratory is equipped with a Beckman-Coulter LS13 320.

The particle size distribution is determined through a combination of laser diffraction and PIDS (polarization intensity differential scattering). The laser scattering enables a determination of particle sizes in a range of 40 nm to 2 mm.

Two models according to Mie or Frauenhofer are available for mathematical assessment of the results. For precise evaluations, tabulated refraction indices are provided or can be measured in the laboratory.

The measuring cell is solvent-resistant; this means that solvent-based dispersions can be measured, as well. The device is used for research and education.