Nano-particle Size Analyzer

Nanoptic 90 is a nanoparticle analyzer based on the well-known technique of dynamic light scattering (DLS). Nanoptic 90 can measure nano materials with size down to 1nm. The high-power long lifetime laser and high sensitivity PMT provide Nanoptic 90 the ability to demonstrate rapid and accurate testing results.

Measurement: Particle size

Particle size range: 1 to 9500nm

Dispersion type: Wet

Technology: Dynamic Light Scattering (DLS)

Features and Benefits

Fast analysis: less than 5 minutes per test.

Small quantity of sample required: 4ml and 1ml sample cell.

High-precision temperature control system provides accuracy of ±0.5°C.

Repeatability: ≤1% (GBRM D50)

Accuracy: ≤1% (GBRM D50)

Scattering angle: 90°

Dynamic light scattering (DLS)

Detector: PMT (Photomultiplier)

As the leading particle size analyzer instrument manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year. Always feel free to inquiry!

Particle size measurement using static light scattering

The particle size distribution as a parameter to specify a powder or dispersion plays a central role in many applications. Examples are construction material (sands, cements), pharmaceutical development, lime stones, ceramics, colored pigments, fertilizers, emulsions and may more. The range of applications is increasing permanently and hence the requirements on the measurement methods regarding size range, measuring time and reproducibility. Particularly the precise and reproducible detection of particles with sizes close to the measuring range limits as well as the simultaneous determination of particle sizes of very small particles (nanometer range) as well as large particles (lower millimeter range) for the characterization of polymodally or very broadly distributed samples provides a challenge. State-of-the-art laser diffraction particle analyzer such as the Bettersizer S3 Plus solve these tasks by an innovative design of the optical bench for the detection of backscattered light of very small particles and by detecting large particles by an integrated high-speed CCD camera or the combination of static light scattering and Automated Imaging.

As the leading laser diffraction instrument manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year. If you need laser particle size analyser, always feel free to inquiry!

Nanoptic 90 is a nanoparticle analyzer based on the well-known technique of dynamic light scattering (DLS). Nanoptic 90 can measure nano materials with size down to 1nm. The high-power long lifetime laser and high sensitivity PMT provide Nanoptic 90 the ability to demonstrate rapid and accurate testing results.

Measurement: Particle size

Particle size range: 1 to 9500nm

Dispersion type: Wet

Technology: Dynamic Light Scattering (DLS)

Features and Benefits

Fast analysis: less than 5 minutes per test.

Small quantity of sample required: 4ml and 1ml sample cell.

High-precision temperature control system provides accuracy of ±0.5°C.

Repeatability: ≤1% (GBRM D50)

Accuracy: ≤1% (GBRM D50)

Scattering angle: 90°

Dynamic light scattering (DLS)

Detector: PMT (Photomultiplier)

As the leading laser particle size analyser manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year.

HFlow-1 tests the flowability of metal powder by measuring whether the sample can flow through the 2.5mm standard funnel.

The design and production of HFlow-1 Hall flow meter is based on the Chinese national standard GB / T1482-2010 and international standards ISO4490-2008.

Powder Flowability Measurement: Powder flowability

Testing sample: metal powder

Technology: Hall flow meter

As the leading particle size analyzer instrument manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year.

Dynamic light scattering (DLS), also known as photon correlation spectroscopy (PCS), is a commonly used characterization method for nanoparticles. DLS particle size analyzer has the advantages of accuracy, rapidity, and good repeatability.

With the update of the instrument and the development of data processing technology, the current dynamic light scattering instrument not only has the function of measuring particle size, but also has the ability to measure Zeta potential and molecular weight of large molecules.

The principle of DLS of dynamic light scattering is that nano-particles, emulsion droplets and molecules in suspension are also moving in a similar way under the collision of Brownian motion of liquid molecules. When a laser strikes these dynamic particles or molecules, these moving particles cause a fluctuation in the intensity of the scattered light, and the frequency of the fluctuation depends on the velocity of the particle, which depends on the size of the particle (because the smaller the particle size, the faster it moves under the impact of the particle Brownian motion).

Therefore, the velocity of particle Brownian motion will be obtained by analyzing the intensity fluctuation of scattered light, and the particle size and particle size distribution of nanoparticle can be obtained by using Stokes-Einstein equation.

As the leading particle analyser manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year.

Particle size measurement using static light scattering

The particle size distribution laser diffraction as a parameter to specify a powder or dispersion plays a central role in many applications. Examples are construction material (sands, cements), pharmaceutical development, lime stones, ceramics, colored pigments, fertilizers, emulsions and may more. The range of applications is increasing permanently and hence the requirements on the measurement methods regarding size range, measuring time and reproducibility. Particularly the precise and reproducible detection of particles with sizes close to the measuring range limits as well as the simultaneous determination of particle sizes of very small particles (nanometer range) as well as large particles (lower millimeter range) for the characterization of polymodally or very broadly distributed samples provides a challenge. State-of-the-art laser diffraction technique devices such as the Bettersizer S3 Plus solve these tasks by an innovative design of the optical bench for the detection of backscattered light of very small particles and by detecting large particles by an integrated high-speed CCD camera or the combination of static light scattering and Automated Imaging.

Measuring method

In static light scattering laser light (monochromatic, coherent light) interacts with the particles, which have to be characterized in terms of particle size. In dependence of the particles' size, the light waves are scattered by the particles in a characteristic manner: the larger the particles are, the greater is the scattering in forward direction. With particles smaller about 100 nm, the scattering intensity is nearly identical in all directions.

The scattering intensity is determined by stationary detectors depending on the angle (light scattering intensity distribution). State-of-the-art laser particle analyzer such as the Bettersizer S3 Plus guarantee the determination of scattering intensities in a continuous angular range of 0.02 – 165°, i. e. in forward, side and backward direction. This is achieved by means of a so-called double lens design and oblique incidence optical system (DLOIOS technology): Fourier lenses (collective lens) are positioned between the laser and particles as well as between particles and detectors. The particles will interact with the light within a parallel laser beam. This offers the advantage that the scattered light can also be detected at very large angles (in backward scattering direction) and thus even very small particles can be measured precisely. Thanks to DLOIOS technology, the problems of conventional measurement setups can also be avoided. Therefore, neither the suitable lenses for the corresponding particle size measurement range have to be selected prior to the measurement (in comparison to the Fourier optics), nor do measurement inaccuracies result from different particle to detector distances, if not all particles lie in one plane (in comparison to the inverse Fourier optics).

To calculate the particle size distribution from the measured scattering spectra, the theory of either FRAUNHOFER or MIE is applied. The FRAUNHOFER theory is based on the hypothesis of opaque and spherical particles: the scattered pattern corresponds to a thin opaque two-dimensional plate – diffraction only occurs at the edges. Therefore no additional optical input constants of the material are necessary for this calculation. However, this theory is only suitable for mean particle sizes from approx. 5 µm.

In contrast the MIE theory uses the hypothesis of virtually translucent and spherical particles, meaning that the light permeates the matter and is scattered elastically at the atoms of the particle. The knowledge of the complex refractive index of the particles and the liquid as well is necessary. This theory is applicable for particles of all sizes.

The following figure shows an example of a volume-related particle size distribution of a calcium carbonate powder – measured with a Bettersizer S3 Plus.

The cumulative throughput curve Q3 (blue) and the resulting histogram (q3, black bar) can be seen.

Literature and norms

ISO 13320 – Particle size analysis – Laser diffraction methods

As the leading particle size instrument manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year.

Bettersize particle size and particle shape analysis instruments are widely used in the research, manufacturing and application of all kinds of mining and minerals, bringing favorable profits.

The Bettersize particle size analyzer, particle shape analyzer and powder characteristics tester can provide complete physical property analysis for the deep processing of mining and minerals, and offer data including particle size distribution, particle shape, flowability, tap density and bulk density, helping you to reduce the cost of mineral processing and control the correct particle grades of products.

As the leading particle analyzer manufacturer in China in terms of brand reputation, sales volume and, most importantly, qualities, Bettersize spare no efforts on R&D each year.

Laser Particle Size Analyzer

BT-Online1 Online Particle Size Analyzer is an on-line particle size monitoring system for real-time particle size monitoring and control in powder manufacturing industries. Driven by Standard Operation Procedure (SOP), it automatically samples, measures, recovers and processes data directly from the powder delivery pipeline, providing 24-hour particle size detection and control for a variety of dry powder production lines.

Measurement: Particle size

Particle size range: 0.1 to 1000µm

Dispersion type: Dry

Technology: Laser diffraction

Nanoparticle Size Analyzer Features and Benefits

Measuring range: 0.1 to 1000µm

Accuracy: ≤3% (GBRM D50)

Repeatability: ≤3% (GBRM D50)

Standard Operation Procedure (SOP)

Automatic Centering

Automatic Alignment

Detector: 68 pieces

Typical interval measurement time: ≥1 min

Laser Particle Size Analyzer, Laser Granulometry

Bettersizer ST laser scattering particle size distribution analyzer includes the patented Dual Lens Optical System (DLOS) which provides a compact design without resorting to folding optics that are susceptible to misalignment caused by vibrations often present in most industrial labs. 

The ST Laser Granulometry incorporates 86 high-speed detectors, which produces the high-resolution data from 0.1 to 1000 microns. This high-speed detector system delivers fast results, often in as little as 15 seconds. 

• Measurement: Particle size
• Particle size range: 0.1 to 1000µm
• Dispersion type: Wet
• Technology: Laser diffraction

Features and Benefits

•Dual Lens Optical System (DLOS):
The Dual Lens Optical System (DLOS) is a technical innovation developed by Bettersize. It detects both the forward and backscatter laser diffraction pattern. This breakthrough technology results in increased particle size measurement range without the added cost of a second light source. This single laser particle size analyser provides for higher accuracy due to a consistent wavelength throughout the full measurement range.

•Standard Operation Procedure (SOP):
The Bettersize software offers an intuitive user interface.  The “Auto Test” function fully automates the entire test sequence.  With one mouse click, “Auto Test” initiates auto-alignment, collects a background, prompts the operator to add sample and analyzes the sample.  

•Compact design:
The rugged and compact design, coupled with the low cost of ownership of the Bettersizer ST makes it the ideal laser particle size analyzer for your quality control applications.

•Auto Alignment Function:
The auto alignment function of Bettersize ST provides accurate and repeatable testing results.  The high speed servo motors allow the Bettersize ST to perform an auto alignment prior to every test. 

 

 

 

Image Particle Size and Particle Shape Analyzer

Dynamic light scattering (DLS), also known as photon correlation spectroscopy (PCS), is a commonly used characterization method for nanoparticles. DLS particle size analyzer has the advantages of accuracy, rapidity, and good repeatability.

With the update of the instrument and the development of data processing technology, the current dynamic light scattering instrument laser particle size analyzer not only has the function of measuring particle size, but also has the ability to measure Zeta potential and molecular weight of large molecules.

The principle of DLS of dynamic light scattering is that nano-particles, emulsion droplets and molecules in suspension are also moving in a similar way under the collision of Brownian motion of liquid molecules. When a laser strikes these dynamic particles or molecules, these moving particles cause a fluctuation in the intensity of the scattered light, and the frequency of the fluctuation depends on the velocity of the particle, which depends on the size of the particle (because the smaller the particle size, the faster it moves under the impact of the particle Brownian motion).

Therefore, the velocity of particle Brownian motion will be obtained by analyzing the intensity fluctuation of scattered light, and the particle size and particle size distribution of nanoparticle can be obtained by using Stokes-Einstein equation.