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The nano-laser particle sizer uses dynamic light scattering and photon correlation spectroscopy to determine particle size based on the speed of the particles' Brownian motion in the liquid. The small particles Brown move fast, the large particles Brown move slowly, the laser irradiates these particles, and different sized particles will make the scattered light fluctuate differently. Photon correlation spectroscopy analyzes the particle size based on the fluctuation of photons in a specific direction. Therefore, this instrument has the characteristics of advanced principle and high precision, thus ensuring the authenticity and effectiveness of the test results. The key to high-quality particle size measurement is the ability to provide optical instruments with minimal deviation, well-concentrated, and well-dispersed samples. Effective sample dispersion is the key to achieving optimal measurements.
Nanometer laser particle size analyzer functional advantages: (1) advanced testing principle: using dynamic light scattering principle and photon correlation spectroscopy technology, the particle size is determined according to the speed of the particle's Brownian motion in the liquid. (2) High sensitivity and signal-to-noise ratio: Using professional-grade high-performance photomultiplier tubes (PMT), the photonic signal has a very high sensitivity and signal-to-noise ratio. (3) High-accuracy constant-temperature control system: A semiconductor thermostat device is designed in the sample test area, and the temperature control accuracy is as high as 0.1°C to ensure that the temperature of the test sample is constant. (4) Stable light path system: The light path system constructed by short-wavelength LD pumped laser light source and optical fiber technology makes the photon correlation spectrum detection system small and has strong anti-interference ability, thus ensuring the stability of the test. . (5) Extremely high resolving power and computing power: Using PCS technology to determine the size of nano-sized particles must be able to distinguish nanosecond signal fluctuations. The core part of this instrument is a CR140 digital correlator developed by Micron Corporation, which has an extremely high resolution of 8ns and extremely high signal processing speed.
Jinan Micron also provided high-speed homogenizers and ultrasonic dispersion devices as accessories, providing necessary conditions for particle testing. The test procedure is very convenient. The dispersed sample is injected into the sample cell, the sample cell is placed in the instrument, and the computer interface immediately shows the relevant curves and the particle size distribution curve. At the beginning, the curve is slightly fluctuating. Wait a little while the curve is stable and the result can be printed. The smaller the particle is, the faster the stability is, and the longer the stability of the larger particle is.
See how Jinan Micron Nano Laser Particle Size Analyzer can stabilize the victory
Another industrial revolution in the 21st century - nanomaterials has become the focus of attention in science and technology countries, and the structure of nanometers and below and nanometers will be the characteristics of the next stage of scientific and technological development. The leading particle testing technology leader in China, Jinan Micron, is a high-tech enterprise specializing in R&D, production, and sales of particle testing equipment. The company's new nanoparticle sizer based on dynamic light scattering is also the first nanometer particle sizer to use photon correlation spectroscopy (PCS) technology. It uses the high-speed digital correlator and the professional high-performance photomultiplier tube developed by our company as the core device. It has the features of fast, high resolution, repeatability and accuracy, and is the preferred product for nanoparticle size determination.