Product Introduction

The 919S domestically produced nanometer particle size analyzer adopts classic 90 ° dynamic light scattering technology, with a particle size range of 0.3nm-15 μ m; High speed digital correlator with a minimum sampling time of 25ns and a dynamic range greater than 1011; High sensitivity APD or PMT detection units with integrated fiber optic technology; Configure a 532nm 50mW high-power solid-state laser with automatic energy output adjustment; Dry gas blowing technology achieves condensation control, with a temperature control range of 0 ℃ -90 ℃ and an accuracy of ± 0.1 ℃.

Testing principle of 919S nanometer particle size analyzer

The principle of dynamic light scattering (DLS) method is that when laser is irradiated on tiny particles dispersed in a liquid medium, the frequency shift of scattered light is caused by the Brownian motion of the particles, resulting in dynamic changes in the scattered light signal over time. The magnitude of this change is related to the Brownian motion speed of the particles, which in turn depends on the size of the particles. Large particles have lower Brownian motion speed, while small particles have higher Brownian motion speed. Therefore, dynamic light scattering technology analyzes the fluctuation law of scattered light intensity of sample particles over time. Photon detectors are used to collect scattered light at a fixed angle, and autocorrelation operations are performed through correlators to obtain correlation functions, which are then mathematically inverted to obtain particle size information.

Application fields of 919S nanometer particle size analyzer

Nanomaterials are used to study the influence of particle size on the properties of nano metal oxides, nano metal powders, and nano ceramic materials. Biomedical analysis from protein DNA、RNA、 Viruses, down to the granularity of various antigens and antibodies. Fine chemical engineering is used to find the optimal particle size distribution for nanocatalysts, in order to reduce chemical reaction temperature and improve reaction rate. ● Paint coating is used to measure the particle size of nano particles in paint, coating, silica gel, polymer latex, pigment, ink, water/oil lotion, toner, cosmetics and other samples. The surface coating of food, drugs, and pharmaceuticals with nanoparticles can enable efficient sustained release and can be used to create targeted drugs that can be used to control the size of drug particles for better efficacy. Adding aerospace nano metal powder to rocket solid propellants can significantly improve the combustion performance of the propellant and can be used to study the optimal particle size distribution of metal powder. National defense technology nanomaterials increase the efficiency of converting electromagnetic energy into thermal energy, thereby improving the absorption performance of electromagnetic waves, and can be made into electromagnetic wave absorbing materials. Different particle size nanomaterials have different optical properties and can be used to study the performance of absorbing materials.