Laser diffraction1/2/2024 Measuring the size of the particles in water can be accomplished using particle size analysis based on laser diffraction technique. Even bottled water may contain impurities, which are typically artificially added minerals or leeched material. Trace amounts of chlorine can be added to control the growth of harmful microbes. Important minerals like magnesium and sodium ions occur naturally in the water supply. Some impurities can be added naturally or artificially for health and safety reasons. This does not mean water needs to be 100% free of impurities. Safe, drinkable water is important for a healthy society. While water composes a majority of the Earth’s surface, only a small percentage is readily available for consumption. Water has great importance in human life. Universal Liquid Module (ULM) Tornado Dry Powder System (Tornado DPS)Įnough for 6-8% obscuration (40% with PIDS)ġ0-30mL or enough for 10 seconds run time Key Specifications Particle Size Analysis Range Instruments: Beckman Coulter LS 13 320 Laser Diffraction Particle Size Analyzer with ULM and Sonication Control Unit connected Particle Sizing of Tap and Bottled Water, PDF Polarization Intensity Diffraction Scatteringįor more information please read our application notes: Particle Size of Coffee Grounds Based on Volume, Surface Area and Number Percentage Brand Particle size distributions based on differential volume (top left), surface area (top right) and number (bottom) for the tested coffee grounds made by Folgers, Starbucks and Dunn Brothers. Particle Size of Bottled Water Particles Based on Volume, Surface Area and Number Percentage Particle size of bottled water based on differential volume (top), surface area (middle) and Tornado Dry Particle System (left) and Universal Liquid Module (right) modules The light scattering technique has been readily applied to measure particle size and size distribution of particles with sizes ranging from 18nm to 2000µm. The complex refractive index of the particle required for the Mie Theory is not needed for the Fraunhofer Theory. Where θ is the measured scattering angle, λ is the wavelength of the laser light and d is the diameter of the particle. The Fraunhofer Theory is a simplified form of the Mie Theory relating the scattering angle to the diameter of the particle and the light wavelength using the following equation: Nonetheless, in applications involving particles with high light absorption or with sizes significantly larger than the laser wavelength, the Fraunhofer Theory can be used to measure particle size. The Mie theory takes the complex refractive index of the particle into account when measuring the particle size. The Mie Theory is the preferred method used to relate the measured scattering angle to the particle diameter. The intensity of the scattering light is measured by an array of light detectors at different angles. Light refracted by a particle creates a scattering angle unique to its shape and size. Measuring the size of particles in suspended liquids or in dry powder format can be accomplished using particle size analysis based on the light scattering technique. Contact Stylus Surface Roughness AnalysisĮxpress Property Mapping through Accelerated NanoindentationĪlloy Composition and Phase Identification
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