Laser Particle Size TesterIt is mainly used to measure the particle size and particle size distribution of materials, and is a commonly used particle size analysis instrument in inorganic analysis, organic analysis, and biological analysis. The principle is based on laser scattering, which determines the size distribution of particles in the sample by measuring the intensity and angle of scattered light. This instrument has the advantages of high precision, fast measurement, wide measurement range, and easy operation.
The principle of laser particle size analyzer is to use laser to scatter particles in the sample, and calculate the size and distribution of particles by measuring the intensity and angle of the scattered light. Specifically, when the sample is injected into the instrument, the laser beam will shine on the sample particles and scatter. Scattered light is collected by a collection system and focused by optical components before being projected onto a detector. The detector measures the intensity and scattering angle of scattered light, and transmits the data to the computer for analysis and processing. According to Mie's theory and the law of light scattering, the size distribution of particles in the sample can be calculated.
Laser Particle Size TesterThe main application scope is as follows:
1、 Materials Science and Chemical Engineering
battery materials
The particle size distribution of positive electrode materials (such as ternary materials NCM, lithium iron phosphate LFP) and negative electrode materials (such as graphite, silicon carbon) directly affects the energy density, rate performance, and cycle life of the battery.
Measure the particle size of conductive agents (such as carbon black).
Ceramics and Powder Metallurgy:
Controlling the particle size of ceramic powders (alumina, zirconia, silicon nitride, etc.) and metal powders (titanium powder, nickel powder, stainless steel powder, etc.) affects sintering performance, density, and final product strength.
Pigments and Coatings:
The particle size of pigments (titanium dioxide, carbon black, organic pigments) and fillers (calcium carbonate, talc powder) affects the coating's covering power, coloring power, glossiness, rheology, and stability.
catalyzer:
The particle size distribution of catalyst support and active components affects their specific surface area, activity, and selectivity.
Polymer materials:
Measure the particle size of latex particles in polymer lotion (such as latex paint and adhesive).
Analyze the particle size of resin powder and additives (such as plasticizers and stabilizers).
nanometer material:
Characterize the particle size distribution of nano powders (such as nano silica, nano zinc oxide, quantum dots) (with the help of polarized light technology or dynamic light scattering).
2、 Pharmaceutical and Biotechnology
Drug development and production:
API: Particle size affects solubility, dissolution rate, and bioavailability (especially important for BCS class II/IV drugs).
Auxiliary materials: The particle size of lactose, microcrystalline cellulose, starch and other auxiliary materials affects the mixing uniformity, flowability and tablet pressing performance.
Inhalation formulations: The particle size of drug particles (especially the inhalable fraction of 1-5 μ m) in dry powder inhalers (DPI) and quantitative inhalers (pMDI) is a key quality attribute that determines lung deposition efficiency.
Injection: Detect the size and quantity of particles in the suspension injection, which meets the requirements of the pharmacopoeia.
Biological agents:
Analyze the particle size of drug delivery systems such as liposomes, nanoparticles, and microspheres.
Measure the size of protein aggregates.
3、 Food and Agriculture
Food processing:
The particle size of powdered foods such as milk powder, cocoa powder, coffee powder, spices, and sugar powder affects their solubility, taste, blending, and flowability.
Detecting the size of suspended particles or milk droplets in beverages (such as juice and dairy drinks) can affect stability, taste, and appearance.
Analyze the particle size of cocoa and sugar in chocolate syrup to determine their impact on taste (whether it has a gritty texture).
agriculture products:
Measure the particle size of flour, starch, and feed pellets.
Analyze the particle size of agricultural chemicals such as pesticides and fertilizers to determine their impact on spray uniformity and efficacy.
4、 Environment and Geology
Soil and sediment analysis:
Quickly measure the particle size distribution of soil, river/marine sediments for soil classification, sedimentary environment research, and pollution assessment.
Dust and aerosols:
Analyze the particle size of industrial dust and PM2.5/PM10 particles (in conjunction with dry sampling) for environmental monitoring and occupational health assessment.
Water treatment:
Monitor the size of alum flowers during the flocculation process.
分析滤料（石英砂、活性炭）的粒径。
5、 Mining and Metallurgy
Mineral Processing and Mineral Processing:
Real time or offline monitoring of mineral particle size in slurry is a key control parameter for optimizing process flow and improving recovery rate in processes such as grinding, grading, and flotation.
Tailings treatment:
Analyze the particle size of tailings particles to determine their stacking stability and environmental impact.
6、 Other industrial sectors
papermaking:
Measuring the particle size of fillers (calcium carbonate, kaolin) and coatings affects the smoothness, opacity, and printing performance of paper.
Cosmetics:
Analyze the particle size of powder or lotion drops in foundation make-up, talcum powder and sunscreen, which affects the skin feel, covering power and stability.
3D printing:
Strictly control the particle size and sphericity of metal or polymer powders, which affects the uniformity of powder spreading and the quality of final printed parts.
Ink and toner:
The pigment/dye particles in inkjet ink and the particle size of laser printer toner directly affect the printing quality and smoothness.