Dynamic Light Scattering is used to measure grain-size distribution in a very small grain size range (1 nm–5 μm). It analyzes the temporal fluctuation of the intensity of scattered light, the smaller the grain, the faster is its movement. The analyzer applies the „Non-intensive Back Scattered” technique while measuring the grain-size distribution from the scattered light.
The other function of the analyzer is the so-called „Zeta-potential measurement”, that can be measured by laser Doppler electrophoresis. If the zeta potential is zero, the stability of the systems is reduced, particles can easily stick together, coagulates and aggregates may develop. If the zeta potential is positive or negative, the colloid system is stable, the particles mutually repel each other, the possibility of clumping decreases.