In the propagation of light, the wavefront is limited by apertures or particles that are equivalent to the wavelength scale, and diffraction and scattering of the energy of diffraction and scattering occurs in the space by interference of the emission of the source wave of the confined wavefront as the source. The (angle) distribution is related to the wavelength of the light wave and the dimensions of the pores or particles.
With a laser as the light source, the spatial (angle) distribution of the diffracted and scattered light energy is only related to the particle diameter after the light has a monochromatic light with a certain wavelength. The diffraction of the particle group determines how much each particle level corresponds to the light energy obtained at each particular angle. The proportion of each specific light energy in the total light energy should reflect the abundance of each particle level. According to this idea, a mathematics and physical model that characterizes the abundance of the particle size class and the light energy obtained at each specific angle can be established, and then the instrument can be developed to measure the light energy. The comparison of the light energy measured at a specific angle with the total light energy can be used to derive the particle group. The abundance ratio of the corresponding particle size class.
Using the wet dispersion technology, the mechanical stirring makes the sample evenly dispersed, the ultrasonic high-frequency oscillation makes the agglomerated particles fully dispersed, and the electromagnetic circulating pump makes the size particles uniformly distributed in the entire circulation system, thereby fundamentally ensuring the wide distribution of the sample tested. Accurately repeat.
Particle size analysis plays an important role in the areas of materials engineering, food engineering, pharmaceutical engineering, petrochemicals, and defense industries. Because the traditional granularity measurement method is cumbersome and takes a long time, it has become increasingly unable to adapt to the needs of rapid response in modern industry and scientific research.
The development of modern and emerging science and technology has enabled laser and microelectronics technology to be applied to the field of particle size measurement, completely overcoming the drawbacks brought about by the traditional methods. While greatly reducing labor intensity, it has also accelerated the detection speed of samples and improved the quality of test results.
In recent years, there are many test techniques and test methods related to particle size distribution, and laser particle size analysis methods are widely accepted because of their high measurement speed, high accuracy, and good accuracy.
On the other hand, factors such as high import tariffs, the high cost of analytical instruments, and the lack of customer awareness in particle size analyzers in developing countries have limited the growth of the spherical particle size analysis market. Market mergers and reorganizations, as well as developing countries focused on raising industry standards, have provided participants in this market with high growth opportunities.
In 2013, North America accounted for the largest share of the global particle size analysis market (32.8%), followed by Europe (32.3%). However, the Asia-Pacific market is expected to expand at a compound annual growth rate of 6.0% from 2013 to 2018. The pharmaceutical R&D and manufacturing activities have gradually shifted from developed countries to Asian countries, and developing countries have continuously raised industry standards. These factors will stimulate the growth of the granular analysis market in the Asia Pacific region.
At present, important instrument manufacturers active in the particle size analysis market include Malvern Instruments Co., Ltd. (UK), Horiba Manufacturing Co., Ltd. (Japan), Beckman Coulter Inc. (United States), McChik Co., Ltd. (USA), and Mack Instruments Inc. (USA), IZON Co., Ltd. (New Zealand), CILAS (France), Newpactech Co., Ltd. (Germany) and Agilent Technologies (USA).
China's particle size analyzer started later than European and American countries, but the development of quite a few latecomers took precedence. In the early days of reform and opening up, the research on particle size testing started slowly. In the mid-1980s, foreign technology was introduced and the laser particle size analyzer was independently developed. After just a few decades of development, China has not only achieved the "never again" of the particle size analyzer industry, but also developed into the world's largest particle size instrument market, and it is also the fastest growing and most competitive market. The technological progress of domestic products has been rapid, and the main performance of some domestic products has reached or approached the advanced level of similar foreign products. At present, China has been able to produce almost all types of particle size testing instruments. Compared with imported particle size analyzers, domestic particle size analyzers have obvious advantages in price and service. However, there is still a small gap in technical performance, quality management, testing methods, and standardization.
Regardless of the most inconspicuous technological gap, there is no mention of the lack of production methods in China. The foreign instrument production process has achieved specialization and standardization. Foreign instrument manufacturers generally perform outsourced production of parts and components, implement quality goal management on components and component suppliers, and the whole production process is only assembly of parts or components, and strict inspection and testing systems are in place. Overall quality. Domestic particle size instrument manufacturers generally perform assembly, commissioning and inspection at the device level. In addition, the quality management system and detection methods are not perfect, the failure rate of the instrument is high, and the average failure-free operation time is short.
The prospects for the development of the particle size analyzer industry in China are considerable. At present, the four major brands in China: Zhuhai Ouagaike, Dandong Baxter, Chengdu Jingxin, and Jinan Micronano accounted for 80% of the domestic market share. This is the biggest affirmation of domestically produced granularity instruments.
It is worth mentioning that the development of China's particle size analyzer occupies a unique advantage.
1. The domestic particle size analyzer is backed by China's most dynamic demand market. Enterprises can grasp the pulse of market development, and the market is relatively stable, which is a powerful backing for enterprise development.
2. China has a strong R&D team and a strong sense of innovation in production companies, which can continuously improve its own technical and other deficiencies.
3. At present, imported particle size testing instruments have established numerous marketing and service agencies in China, which facilitates the exchange of technologies between China and international advanced particle size analyzer manufacturers.
In the arena of the development of the international particle size analyzer, one can't expect the opponent to stop and only accelerate oneself forward to take the initiative. We believe that in the future, China's particle size testing industry will continue to improve in terms of technology, performance, quality, and service, and the granular instrument market will develop in a healthy and stable manner. The era of domestic laser particle size analyzers is approaching.
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