Ultra high speed intelligent particle size analyzer

The ultra high speed intelligent particle size analyzer is an instrument that analyzes particle size through diffraction or spatial distribution of scattered light. It adopts Furanhofer diffraction and Mie scattering theory, and the testing process is not affected by many factors such as temperature changes, medium viscosity, sample density, and surface state. As long as the sample to be tested is uniformly displayed in the laser beam, the test results can be obtained.

The ultra high speed intelligent particle size analyzer is an instrument that analyzes particle size through diffraction or spatial distribution of scattered light. It adopts Furanhofer diffraction and Mie scattering theory, and the testing process is not affected by many factors such as temperature changes, medium viscosity, sample density, and surface state. As long as the sample to be tested is uniformly displayed in the laser beam, the test results can be obtained.

currentlyUltra high speed intelligent particle size analyzerDuring the testing process, there is always a choice of opacity. Simply put, opacity refers to the concentration of the sample suspension configured when using a high-speed intelligent particle size analyzer to test samples. The correct selection of opacity is an important step in the particle size testing process of the high-speed intelligent particle size analyzer. Whether the opacity or the concentration of the tested sample is appropriate is seriously related to the representativeness and representativeness of the particle size measurement results.

The measurement principle of the ultra high speed intelligent particle size analyzer requires that during the testing process, the concentration of the sample should be based on the principle that there is no secondary scattering between particles in the sample. In theory, it is required that the distance between particles in the suspension or air be three times the diameter of the particles. However, this requirement is very difficult to grasp. Therefore, in actual particle size testing, the value of the light shielding ratio is adjusted to minimize secondary scattering between particles. The shading ratio should not be too large or too small. When the shading ratio is too large, the concentration of particles is too high, which can easily lead to secondary scattering and increase the measurement error; The light shielding ratio is too low, the concentration of particles in the sample is too low, the number of particles is too small, and the representativeness of the test results is poor, which may even lead to invalid test results. Therefore, in the testing process, the selection of light shielding ratio needs to be tested repeatedly to obtain correct measurement results.

Generally speaking, for thicker samples, a higher shading ratio can be chosen, such as 10-20%, while under normal circumstances it can be 5-20%; For ultrafine samples, the light shielding ratio of the sample can be appropriately reduced, but generally not exceeding 40%. These are empirical values obtained from experiments, but it is necessary to find the corresponding light shielding ratio * value during sample testing through repeated experiments.