Microscopy microscopy (microscopy) is a commonly used method for the determination of particle size. Depending on the particle size of the material, either by using general optical microscope, an electron microscope may be used. An optical microscope for measuring defense 0.8 ~ 150? M, is less than 0.8? M must be observed with an electron microscope. Scanning electron microscopy and transmission electron microscopy to directly observe the size commonly used in 1nm ~ 5? M within the scope of particles in nano materials for particle size and morphology analysis. Microscopy can understand the shape of water drop angle measurement during the preparation of particles, the specific surface of the particle size distribution plotted in FIG, rather than just an average particle size distribution. However, when using an electron microscope in particle morphology was observed satisfied, because the prevalence of inter-particle van der Waals force and the Coulomb force, the particles are easy to aggregate to form pellets, difficult to measure the particle size, the need to use decentralized agents or suitable method of operation of dispersed particles. The traditional method for the determination of particle size distribution of the microscope, the commonly used method of statistical analysis microscopic photograph of a large number of particle size. Since the measurement results influenced by subjective factors, the measurement accuracy is not high, and the operation onerous and time-consuming direct droplets angle measurement, error-prone. In recent years, integrated image analysis system can quickly and accurately completed microscopy measurement and analysis system in the work. Comprehensive image analysis system for automatic measurement of particle size and automated analysis system. Microscope imaging test particles, and then complete the determination of particle size by computer image processing technology. Image analysis technology for their random measurements, statistics and intuitive is recognized measurement results and the actual size distribution best fit testing technology. The advantage is that you can directly observe whether particle agglomeration. The disadvantage is that a representative sample is poor, poor reproducibility of experimental results, the measurement speed. Study light scattering method light scattering method (light scattering) is divided into two kinds of static and dynamic and static light scattering (ie, the time-averaged scattering) measurement of scattered light distribution angle meter retail space drops, dynamic light scattering study of the scattered light law intensity at a fixed spatial position in the variation with time. Mature light scattering theory mainly Fraunhofer (Fraunhofer) diffraction theory, Fresnel (Fresnel) diffraction theory, m (Mie) and Rayleigh scattering theory (Royleigh) scattering theory. Laser particle size analysis is the most major nanomaterials system size analysis methods. When a certain particle size spherical granules when a bunch of laser irradiation of a wavelength of λ, diffraction and scattering two phenomena occur, generally when the particle size is greater than 10λ droplets angle meter manufacturers to diffraction phenomena based; when the diffractive phenomenon based; when the particle size is less than 10λ, places scattering based. In general, the sample analysis laser diffraction particle size analyzer only at 5 ?? m or more accurately; and dynamic light scattering particle size analyzer in the nanometer particle size 5 ?? m or less, submicron particles accurate sample analysis. In addition, the theoretical model of laser particle size analysis is based on the particle shape for the autumn, on monodisperse condition, but actually measured particles were more irregular shape and polydispersity. Therefore, the particle shape, particle size distribution characteristics on the final result of the larger particle size analysis, and the more irregular particle shape, particle size distribution is wide, the greater the results of error analysis. Droplets angle meter retail, drop angle measurement, contact angle measurement provided by the Dongguan Sheng Ding Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) strong, credible, in Dongguan, Guangdong specialized instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead ShengDing instrument and you hand into the brilliant, for a better future!