Particle Size Analyzer BECKMAN COULTER LS 13 320 SGL

Particle Size Analyzer with Dry Powder System Module
Fast and reproducible results in particle analysis, laser diffraction, and particle counting

The Beckman Coulter LS 13 320 can determine the particle size and particle size distribution of a sample using light scattering. In doing so, it makes use of Frauenhofer's diffraction for larger particles (see info sheet at HELOS/KR). However, thanks to Beckman Coulter's Polarization Intensity Differential Scattering (PIDS) technology, the device can also analyze particle sizes that are far smaller than the wavelength of ordinary light.

In a PIDS analysis, the sample is irradiated with polarized light. If the sample particle is much smaller than the wavelength of the irradiated light, the electrons of the particle are excited by the oscillating electric field of the light beam. The electrons oscillate perpendicular to the light beam; an oscillating dipole moment arises. Due to the oscillating dipole moment, it radiates light in all directions except the direction of the excitation light. Depending on whether the excitation light is polarized vertically or horizontally, the measured signal intensity of the sample Iv or Ih at a certain angle is different. These values depend heavily on the ratio of particle size to wavelength. Therefore, in a PIDS measurement, the sample is measured at three different wavelengths with one vertical and one horizontal polarization. An algorithm is then able to calculate a particle size distribution from the measurements.

Dry powder system (Tornado module)
The dry powder system module provides reliable results from 400 nm to 3500 μm for all types of homogeneous and heterogeneous samples that can be dry dispersed.

Analytical size range: 400 nm to 3500 μm
– Measures the entire sample according to ISO 13 320
– Programmable shading adjustment to optimize sample feeding
– K5727004 User-selectable vacuum K5727004 pressure for maximum dispersion control

Advantages of the LS 13 320 Particle Size Analyzer
Excellent data reproducibility
Reproducibility is one of the most important factors in laser diffraction particle size analysis. Stricter product specifications allow for the production of higher quality bulk and particle materials.

Measured variable: particle size, particle size distribution

Measurement method: light diffraction, PIDS method

Measurement range: 0.017 μm to 2000 μm

Applications: Measurement of particle sizes

Materials: emulsions such as lotions and creams dispersions such as paints and PCD

Software Version 5.01

Volts: 100-220/240 V

incl. vacuum pump controller

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