Answers to frequently asked questions about particle size analyzers(5)

What effect does concentration have on the results in particle size distribution measurement?

Generally, particle size distribution measurement is realized by system identification and acceptance of optical signals. The strength of the light signal is determined by the number of particles in the suspension. Taking the laser method as an example, the higher the concentration of particles in the suspension, the stronger the scattered light signal, but the ensuing complex scattering phenomenon is also intensified, which affects the measurement results; on the contrary, the lower the concentration of particles in the suspension, although the complex scattering phenomenon It is alleviated, but the signal-to-noise ratio decreases and the representation is not enough. The situation is similar for other particle distribution measurement methods, so proper particle concentration is important during particle size distribution measurement.

What is the meaning of "particle concentration" displayed in particle size distribution measurement?

The "concentration" displayed in the particle size distribution measurement is generally the size of the received light signal, which is an amount related to the number of particles. It is generally called the optical concentration, not the percentage concentration. For laser hair, the more particles in the suspension, the greater the optical concentration (but if there are too many particles, the optical concentration will decrease); for the sedimentation method, the more particles in the suspension, the smaller the optical concentration .