Comparison of several dry and wet dual-purpose laser particle size analyzers at home and abroad

There are many methods for measuring powder particle size. The traditional methods mainly include screening method, microscope method, Coulter induction method, gravity sedimentation method, centrifugal sedimentation. These test methods generally have the disadvantages of cumbersome operation, long test time, and inability to measure online. They are increasingly unsuitable for the requirements of modern industrial production and scientific research. Laser particle size analyzer is currently the most widely used one. It has a wide range of particle size measurement, a wide range of applications, good reproducibility, fast measurement speed, convenient operation and can realize online measurement. One measurement can obtain a variety of particle size data, such as volume average particle size, particle size curve, interval particle size distribution and cumulative particle size distribution. The dry and wet dual-purpose laser particle size analyzer is deeply favored by customers because of its wide range of measurement materials and the ability to convert between dry and wet modes!

Figure 1. Appearance of Bettersize2000LD intelligent laser particle size analyzer

Bettersize2000LD laser particle size analyzer is an intelligent laser particle size analyzer using single beam dual lens technology, with a test range of 0.02-2000μm. All operations are completed automatically under computer control, and it has special functions such as automatic testing, automatic optical path calibration (automatic centering), automatic water inlet, automatic drainage, automatic bubble elimination, automatic cleaning, automatic printing and automatic saving. In a word, it is to add the sample to the circulation pool and click the mouse. All operations are completed by the computer and accurate results are obtained. The comprehensive performance of the system has reached the advanced level of similar foreign products. The instrument has outstanding features such as wide test range, fast test speed, accurate and reliable results, good repeatability, and easy operation. It is a new generation of particle size testing instrument integrating laser technology, computer technology, and optoelectronic technology. It is particularly suitable for laboratories of colleges and universities, research institutes, and large enterprises.

1. Performance index
test range: wet method: 0.02μm-2000μm; dry method: 0.1μm-2000μm
injection method: wet method: automatic circulation pump; dry method: automatic dry method turbulence

2. Test objects
Various non-metallic powders: such as heavy calcium, light calcium, talcum powder, kaolin, graphite, wollastonite, brucite, barite, mica powder, bentonite, diatomaceous earth, clay, etc.

Various metal powders: such as aluminum powder, zinc powder, molybdenum powder, tungsten powder, magnesium powder, copper powder, rare earth metal powder, alloy powder, etc.
Other powders: such as catalysts, cement, abrasives, medicines, pesticides, food, coatings, dyes, fluorescent powders, river sediments, ceramic raw materials, various emulsions, etc.

Figure 2. Appearance of LS-C (III) dry and wet two-in-one laser particle size

analyzer LS-C (III) dry and wet two-in-one laser particle size analyzer uses the scattering phenomenon of particles to infer the particle size distribution of the measured particles based on the distribution of scattered light energy. OMEC has achieved good repeatability of particle measurement, large dynamic range, and simple and convenient operation through the integration and optimization of optical, mechanical, electronic, and computer systems.

1. Performance index
test range: 0.1-1000μm
Sampling method: dry sampling and wet sampling

2. Application scope
: It can measure samples that need to be dispersed in liquid, and can also measure powder materials that cannot be dispersed in liquid and need to be dispersed in gas.

Figure 3. Appearance of Winner2308 laser particle size analyzer

Winner2308 laser particle size analyzer adopts the classic Mie scattering principle, patented technology of convergent light Fourier transform and unconstrained free fitting data processing technology, and softens the spectrum amplification technology, thus easily broadening the test range in a limited space. During use, as long as the test conditions are set according to the characteristics of the measured sample, a series of operations can be completed automatically, and accurate and reliable test results can be obtained. In addition, the photoelectric detector is adjusted using a three-dimensional alignment system, which avoids the tediousness brought by manual debugging, and the entire optical path system can be calibrated at any time to ensure its accurate alignment, thereby providing a strong guarantee for the accuracy and stability of the test results.

1. Performance index
test range: Winner2308A dry method: 1-2000μm wet method: 0.05-2000μm;
Winner2308C dry method: 1-1200μm wet method: 0.05-1200μm
injection method: dry injection and wet injection

2. Test objects:
cement, ceramics, medicines, coatings, dyes, pigments, fillers, chemical products, catalysts, coal powder, water-coal slurry, mud, sand, dust, flour, food, additives, pesticides, explosives, graphite, photosensitive materials, fuels, metal and non-metal powders, calcium carbonate, kaolin and other powder industries, especially those that may undergo chemical reactions, shape changes and losses in liquids, such as Chinese herbal medicines, magnetic materials, and powder industries with a relatively wide distribution, which have unique applicability.

Figure 4. JL-6000 wet and dry laser particle size analyzer

The JL-6000 dry and wet dual-purpose laser particle size analyzer is a new type of laser particle size analyzer that integrates dry and wet testing. It has fast testing speed, simple operation and good repeatability. The wet sampling system includes ultrasonic dispersion, sample pool, circulation pipeline, etc. The dry sampling system includes silent air compressor, air filter separation purifier, dust extraction system, dust storage tank, etc. Dry testing and wet testing can be easily switched with just one button, and it has a wide range of applications and meets the needs of different industries.

1. Performance index
test range: 0.02μm～2000μm
Sampling method: dry sampling and wet sampling

2. Test objects
: ferrite, NdFeB, hard magnetic powder, soft magnetic powder, cobalt powder, electronic materials, pesticides, pigments, medicines, ceramics, cosmetics, coatings, food, calcium carbonate, talc, kaolin, papermaking, alumina, rare earth, catalysts, foaming agents, refractory materials, cement, graphite and other industries' dry powder and emulsion material particle size distribution test.

Figure 5. Mastersizer 2000 laser particle size analyzer

The Mastersizer 2000 laser particle size analyzer is a modular instrument designed to measure the particle size distribution of wet and dry powder samples. It can be equipped with a range of sample dispersion devices, including automatic samplers. It is fully automated and can measure samples according to set standard procedures, eliminating differences caused by different operators. The Mastersizer 2000 laser particle size analyzer was developed to meet the industry's growing demand for comprehensive comparability, traceability, regulatory compliance and high efficiency of laboratory results. The instrument can be used flexibly for rapid switching between wet and dry measurements, and allows users to quickly change from aqueous dispersion systems to solvent dispersion systems.

1. Performance index
test range: 0.02μm～2000μm
Sampling method: dry sampling and wet sampling

2. The test object
is suitable for the measurement of emulsions, suspensions and dry powders.

Figure 6. LS 13320 Laser Particle Size Analyzer

Beckman Coulter LS 13 320 series laser particle size analyzer applies the principle of particle light scattering and calculates the particle size distribution according to optical theory. It is mainly suitable for particle size analysis of powders or various materials. Its biggest features are wide dynamic range of particle size analysis; the highest resolution in the industry; simple and fast operation; and high degree of automation. LS 13 320 series laser particle size analyzer has a variety of sample dispersion systems to choose from, and can choose dry or wet system to analyze samples. It is a new generation of high-resolution nanometer and micron particle size analyzer, which can be used as an independent high-resolution nanometer analyzer to analyze nanometer size, with a lower limit of 17 nanometers. The data can be exchanged and compared with other measurement methods, such as screening method, sedimentation method, etc.

1. Performance indicators

Test range: 0.4μm- 2000μm

Injection mode: fast switching between dry and wet sample stages

2. Test subjects

Powder particle size analysis, emulsion analysis, etc.

Figure 7. S3500 series laser particle size analyzer. The
S3500 series laser particle size analyzer from Microtrac, an American company, adopts the classic static light scattering technology and full Mie theory processing in principle, utilizes the modern modular design concept, uses the patented three-laser light source technology, is equipped with an ultra-large-angle dual-lens detection system, and arranges 151 high-sensitivity detection units in a logarithmic manner. No scanning is required, and the parallel channels receive scattered light information in real time, providing accurate and reliable measurement information.

1. Performance index
test range: 0.02μm-2800μm

Injection mode: Automatic identification of dry and wet sample systems, fast switching

2. Test object:
powder particle size analysis, emulsion analysis, etc.

Figure 8. HELOS-OASIS two-in-one dry and wet particle size analyzer

HELOS-OASIS two-in-one dry and wet particle size analyzer can realize "dry measurement for dry samples, wet measurement for wet samples; instantaneous dispersion, instantaneous measurement". According to the state of the sample being tested, it can automatically complete the conversion of dry and wet measurement methods within 5 seconds. Large particle materials are tested with a large-range lens, and small particle materials are tested with a small-range lens. Different test lenses are selected in a targeted manner so that the entire particle size distribution of the tested sample falls exactly at the optimal position of the selected lens range, fully ensuring the maximum resolution of the measurement and the highest accuracy and reliability of the test results.