Dynamic light scattering (DLS), also known as photon correlation spectroscopy (PCS), is a commonly used characterization method for nanoparticles.
View MoreDynamic light scattering (DLS), also known as photon correlation spectroscopy (PCS), is a commonly used characterization method for nanoparticles.
View MoreWhen the particle sizing results are different, it should be addressed as the following steps.
View MoreDuring particle sizing, the relative value of shading rate is used to represent the concentration of suspension. The shading rate is determined by the number of particles in the suspension: the more p...
View MoreIn particle sizing, we often encounter a situation: for the same sample, different instruments could produce different results. Some powder manufacturers and users tend to judge the quality of product...
View MoreFour main parameters are used to evaluate the performance of a particle size analyzer:(1) Sensitivity: refers to the change in test results when two samples with very small size difference (e.g., D50 ...
View MoreNIB powder has strong magnetic properties and is easy to agglomerate; so cannot be tested by wet dispersion. The dry dispersion can overcome the agglomeration caused by magnetism through the instantan...
View MoreRefractive index is the ratio of light speed in vacuum and light speed in other materials. The higher the refractive index of the sample, the greater the refractive ability of incident light.Absorptiv...
View MoreIn addition to certificated reference materials, many instrument manufacturers also introduced the general reference materials (or working standard materials), which are used for the verification of i...
View MoreThe calibration of a particle size analyzer can be performed using certificated reference material (CRM) or general reference material (RM).
View MoreA laser beam emitted by the laser becomes a parallel beam after filtering, expanding, and quasi value. When no particles are illuminated, the parallel beam passes through the Fourier lens andconverges...
View MoreSOP is short for Standard Operation Program. It is now available in smart laser particle sizing instruments, facilitates operation automation and standardization, and is used to achieve 'one-click' operation.
View MoreThe properties of particles include particle size, shape, surface structure and pore structure. The shape of the particles can impact on many properties of a powder sample.
View MoreShading ratio refers to the percentage of light scattered and absorbed by particles, which is used to represent the optical concentration of suspension in laser particle sizing.
View MoreParticle shape, also named as particle morphology, is currently characterized by measuring and calculating the projected shapes of the particles, including outline contour and roughness. All the metho...
View More'Concentration' displayed in particle size distribution measurement usually indicates the intensity of the received light signals, which is related to the number of particles, usually called 'optical ...
View MoreA dispersant is a substance that significantly reduces the surface tension of the medium and hence improves the surface wetting or charged state of the particles.
View MoreMie scattering theory is induced from Maxwell's electromagnetic theory. It describes the analysis to the mechanism of light scattering from a smooth sphere.
View MoreParticle agglomeration refers to the aggregation of multiple individual particles under certain conditions. Agglomerated particles are characterized by low binding force and instability.
View MoreResolution is defined as the minimum difference between two samples that can be effectively distinguished by a laser particle size analyzer. As important as repeatability and accuracy, resolution is o...
View More"Grounding" gives the shell of instrument and the common port terminal zero potential. It has two functions:(1) Improve the instrument stability by enhancing the ability of anti-interference;(2) Ensur...
View MoreBackground status could help to estimate whether the laser particle size analyzer is running normally. If the background value >4 or the column heights in the histogram are uneven, it indicates poo...
View MoreThe most commonly used liquid medium in particle sizing is water. Users could choose distilled water, purified water, deionized water, clean tap water, and well water. But no matter what kind of water...
View MoreThere are two methods to control shading ratio. The first method is multiple sampling: adding small amounts of samples for multiple times and observe the changing of shading ratio. When reach the pre-...
View MoreThe particle size measurement is a process of characterizing a small amount of sample to represent the whole batch of the product. Therefore, sampling is the first and also the most important step of ...
View MoreHelium-neon laser is one of the earliest, most mature and most widely used lasers. The gain medium of the laser, as suggested by its name, is a mixture of helium and neon gases, in approximately a 10:1 ratio, contained at low pressure in a glass envelope.
View MoreThe commonly used liquid medium for particle sizing are water, anhydrous ethanol, and other organic solvents. For dry dispersion particle sizing, compressed air or compressed nitrogen are commonly used as gas medium.
View MoreThe distance between the small angle detectors and the detector center is very small (about 100μm). The main beam may deviate from the detector center to the small angle detectors, due to factors suc...
View MoreComplete and detailed data: including frequency distribution data and histogram, cumulative distribution data and curve, original parameters, D50, D97 and other 10 typical values, simple distribution table, etc.
View MoreThere are many factors affecting the resolution of laser particle size analyzers:(1) The more photodetectors there are, the higher the resolution;(2) Inverse algorithm: good inverse algorithm leads to...
View MoreBettersizer S3 Plus laser & imaging particle analysis system combined laser scattering and microscopic imaging for particle sizing and morphology analysis. In terms of particle sizing , the combin...
View MoreTo have good background status, the laser particle size analyzer should simultaneously satisfy the following five points: low value (1-4), short length (within 20 channels), sloping shape (decreasing ...
View MoreAs a specialized manufacturer of laser particle size analyzer, Bettersize has made good progress in developing new technologies and obtained dozens of patents over the years. DLOS (dual lens optical s...
View MoreUltra-fine and nano-sized powder materials are the research and production trend of modern powder materials. In order to meet the requirement of measuring these particles, the measurement range of las...
View MoreLaser particle size analyser is a professional laboratory instrument. There are many brands on the market with varying performance. The following suggestions may be helpful for users to choose instrum...
View MoreIn general, particle sizing is realized through the system recognition and reception of optical signals. The intensity of the light signal is determined by the number of particles in the suspension.Ta...
View More(1) Fast sampling speed: The sampling speed of the laser particle size analyzer reaches 2800 times/second, which can quickly collect the scattered signal, avoiding the signal loss and overlap, improvi...
View MoreSemiconductor lasers, also known as laser diode (LD), are one of the most recent developments in semiconductor physics in the 1980s. The advantages of semiconductor lasers are: small volume, lightweig...
View More(1) Certification and qualification: 'Bettersizer' has obtained CE and 21CFR Part11 certificates. The company has passed the ISO9001 quality system certification.(2) Original dual-lens optical system ...
View MoreBackground is optical signal formed on the detectors after the laser passed the sample cell with clean medium. The main cause for background signals is laser refraction/reflection when go through air,...
View More'Bettersizer' series employed new technologies including DLOS (dual-lens optical system), automatic alignment system, SOP, results- conversion, result calibration, dry sampling and dispersion, automat...
View MoreAngle of Repose: Under the static balance, the angle between the slope of a powder pile and the horizontal plane is Angle of Repose. It is measured when the powders fall to a surface via gravity and f...
View MoreBettersize laser particle size analyser uses particle size standard material to calibrate the accuracy. There are two types of particle size standard materials:(1) Working standard sample provided by ...
View MoreBulk density: fill the powder sample into a measuring cup, flatten the top, the ratio of the powder mass to the volume of the cup is defined as bulk density. It indicates the mass of the powder that c...
View MoreIn the latest version of the software of the Bettersize laser particle size analyzer, three modes of analysis are set: "General", "Multi-peak", and "R-R distribution" analysis modes. The "General" mo...
View MoreMesh is the unit to measure the pore size of a sieve, defined as the number of pores per inch in a sieve. The larger the mesh, the smaller the pores. Because the standard in different countries varies...
View MoreThe refractive indices of different samples and media are different, and the Mie scattering theory is related to the refractive index, so in order to make the test results accurate, the refractive ind...
View More(1) Instrument: whether the laser, detector, signal transmission system, control system, sampling system, and software work fine.(2) Operation process: background, shading, software parameters, medium...
View MoreThe software installed in Bettersize laser particle size analyzer includes 17 languages, including English, French, German, Russian, Japanese, Korean, Portuguese, Arabic, Simplified Chinese, Tradition...
View MoreFor particle sizing instruments, the evaluation of reproducibility is important in several aspects:(1) to understand the long-term stability of the instrument;(2) to evaluate the stability of the samp...
View MoreMost of Bettersize laser particle size analyzers use a set of software. When in operation, select "instrument model" window and then click the radio button in front of the instrument model to realize ...
View MoreRepeatability and reproducibility are two important factors for particle size analysis. So we must know what is reproducibility? What is the difference between repeatability and reproducibility?Reprod...
View MoreBettersize Instruments Ltd is the leading manufactuer of particle size analyzers in China. Our instruments can meet all your needs for particle size measurement and particle test.Providing services to...
View MoreRepeatability is important evidence used to evaluate the current status of the instrument. Good repeatability indicates that all parts of the instrument, including laser, detector, signal transmission...
View MoreSeveral methods are commonly used to measure particle size. These methods include laser diffraction (mm, μm, nm), dynamic light scattering (nm), dynamic and static microscopic imaging (μm, size and ...
View MoreD50 is the corresponding particle size when the cumulative percentage reaches 50%. D50 is also called as the median particle diameter or median particle size. For example, for a powder sample with D50...
View MoreParticle size is one of the main characteristics of powder materials. It is associated with parameters such as cement reactions in water, attaching strength and coverage of coatings, capacity of lithi...
View MoreParticle size indicates how small (or big) a particle is. The unit is usually μm or nm. Mm could also be used for certain fields where the particles are relatively big. Diameter is usually used to de...
View MoreVarious models of Bettersize laser particle size analyzers have an ‘Automatic Test’ function. Click the ‘Automatic Test’ button and the computer will automatically control the instrument to comple...
View MoreUltrasonic dispersion is an effective means of dispersion commonly used in particle sizing. Bettersize ultrasonic disperser adopts the excitation and frequency tracking technology, stable frequency an...
View MoreA micro-sample cell is available for the users of Bettersize laser particle size analyzers. It is mainly used for testing valuable samples(such as diamonds) and samples with organic solvents media.The...
View MoreBettersize laser particle size analyzer software passed the 21CFR Part11 certification. The ‘safety’ menu is the software is designed to meet the certification standard. It includes management autho...
View MoreAn automatic centering system is installed in all of Bettersize laser particle size analyzers. The function of the automatic centering system is to ensure that the center point of the detector is alwa...
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