Wet & Dry Method Laser Particle Size Analyzer

KR-DW2000 is the latest product developed by our company. It has won the praise of our customers since its listing. The KR-DW2000 adopts the most advanced Mie scattering principle and converging optic

  • Model: KR-DW2000

KR-DW2000 is the latest product developed by our company. It has won the praise of our customers since its listing. The KR-DW2000 adopts the most advanced Mie scattering principle and converging optical Fourier transform optical path. The high-density probe and the full-scale seamless connection test method ensure the accuracy and repeatability of the test results. The unique wet circulation system ensures that the particles ensure no particle deposition during the test. No waste liquid accumulation after the test is drained, which ensures the accuracy of the second test and makes the test results more realistic and reliable. The dry dispersion takes a linear spray. Dispersion method, the sample is vertically and backwardly dispersed after high-pressure gas dispersion, avoiding secondary clusters of particles to be tested, and adopting a pipeline-free residue design to ensure the accuracy of testing different samples. The superior optical path automatic proofing system, dry and wet one-key switching system, dry computer remote control feeding system and other careful design highlight the unique advantages of KR-DW2000.

Main performance characteristics of KR-DW2000 laser particle size analyzer:

Advanced optical path design: KR-DW2000 adopts concentrated light Fourier transform test technology to ensure maximum range at the shortest focal length and effectively improve the resolution of the instrument. The unique high-density detection unit allows KR-DW2000 to have superior small particle test. Capability, high-density detection unit with KR-DW2000 has superior full-scale seamless testing capabilities.

Single-lens single-lens design: The newly designed optical path uses the rear lens acquisition technology to achieve a blind zone detection from 0.01 to 170 degrees, with a measurement range of 0.01 to 2000 microns.

Aluminum alloy optical platform: high-precision all-aluminum optical platform, long-term stable and reliable; optical path system is fully enclosed, effectively solve the dust pollution problem; the instrument design meets the international laser safety regulations, with laser beam automatic protection.

Misoperation protection function: The newly designed KR-DW2000 has misoperation protection function. The instrument has non-response function to the operator's wrong command, which avoids damage to the instrument caused by misoperation and greatly improves the stability of the instrument test result.

Large-caliber lens: Large-caliber Fourier transform lens, more efficient implementation of optical signal Fourier transform, more accurate and more efficient.

Ultrasonic anti-dry: DW2000 achieves the waterless ultrasonic self-protection function of the sample cell to avoid damage to the ultrasound; at the same time, the ultrasonic power can be adjusted within the range of 0 to 50 watts.

Dust-proof and shock-proof design: The instrument is sealed as a whole, which greatly improves the service life of internal components. The unique suspension structure can effectively avoid the interference of external vibration to the instrument, and make the result test more stable and reliable.

Strong anti-corrosion design (optional): It can be equipped with acid, alkali, oil (including all solvent oil) and organic solvent (such as acetone, phenol, n-hexane and other organic solvents) according to customer's actual needs.

Imported fiber-optic semiconductor laser: KR-DW2000 adopts high-stability, long-life imported high-power fiber-optic output semiconductor laser. Excellent monochromaticity and stability make KR-DW2000 have superior test repeatability; laser has self-checking power The self-regulating function is changed to maintain the constant power output of the laser. (wavelength 635 nm; power greater than 5 mw).

Automatic alignment: exclusive use of the combination of mechanical center and optical center technology, the optical path automatically adjusts the positioning more accurately, reaching the micron level; at the same time, the optical path adjustment speed can be adjusted quickly and quickly in 15 seconds. The self-developed automatic alignment system consists of stepper motor, precision guide rail, precision controller and software system. The minimum step distance is 0.2 microns, ensuring that the focus of the laser beam always passes through the center point of the detector, improving the accuracy of the test results and testing. Repeatability. The automatic alignment system is standard on all types of laser particle size analyzers.

Split design: KR-DW2000 adopts split design, the optical path part is more stable and effective, avoids the influence of vibration of the dispersing device, and greatly improves the test repeatability of the instrument.

Bubble-free design: The new design eliminates air bubbles from entering the test sample window during the entire test process, avoiding air bubble interference.

Sample no residue design: The instrument pipeline and drainage structure were optimized. There was no residual liquid in the instrument pipeline and circulation pump to avoid the impact on the next test data. The dry test also carried out the residue-free design.

Dry computer remote control feeding: When the KR-DW2000 dry test is conducted, the tester can control the feeding speed through the computer remotely, which greatly reduces the labor intensity of the tester.

Sample window quick change device: The newly designed sample window quick change device makes the sample window replacement more convenient and quick.

Software: Compliance with Pharmacopoeia GMP regulations, with electronic signature, permission settings, data tracking, data cannot be changed and other functions.

For customers in the pharmaceutical industry, 3Q certification is available.



Executive Standards

ISO 13320-1:1999GB/T19077.1-2008

Testing range

Wet method 0.01μm -2000μm

Dry method 0.1μm -2000μm

Number of detector channels

Wet method 127

Dry method 117

Accuracy error

≤±1% (national standard sample D50 value)

Repeatability error

≤0.5% (national standard sample D50 value)

Bubble-free design

with bubble-free design, no bubble interference data is more accurate

Misoperation protection

The instrument has a misoperation self-protection function, and the instrument does not respond to misoperations.

Laser parameters

Imported fiber output high power laser λ = 650nm, p>10mW


imported Canon lens

Operating mode

Dry and wet software one-button automatic operation

Optical path calibration

Optical path automatic calibration

Wet Dispersion



frequency: f=40KHz, power: p=100W, time: freely adjustable; with super

              Soundproof dry burning

Circulation, mixing     

Cycle mixing integrated design, speed: 100-33950rpm adjustable speed

Circulation flow

Rated flow: 0-10L/min Adjustable     Rated power: 25W

Sample cell

Self-designed boiling sample cell, better dispersion, capacity: 190-600mL can test normally

Opacity Detection

Instrument has a unique real-time detection function of opacity to ensure more accurate sample addition.


Micro injection

The instrument can be equipped with a micro automatic test device, which can be cyclically tested in 10 ml.


Dry Dispersion


Dispersion Mode

High Pressure Air Dispersion

Feeding mode

mechanical stepless speed control, vibration feeding, software control

Oil-free silent air compressor

has dust filtering function to ensure test accuracy

Cold dryer freeze

dryer can filter moisture in air to ensure dispersion effect


Analytical models

include free distribution, R-R distribution, lognormal distribution, categorized statistical model, etc., to meet the different requirements of different industries for the particle size statistics of the tested samples.

Statistical methods:

Volume distribution and quantity distribution to meet the different statistical methods of granularity distribution in different industries

Statistical comparison

can be made according to the results of several tests, which can obviously compare the differences of test results of different batches of samples, samples before and after processing and at different time. It has a strong practical significance for the quality control of industrial raw materials.

Self-DIY display template

user-defined data to be displayed, according to the percentage of particle size, according to the percentage of particle size or according to the particle size interval to find the percentage, in order to meet the different industries on the characterization of particle size testing. Diameter distance, consistency, interval accumulation, etc.

Test report

Test report can export many kinds of documents, such as Word, Excel, Bmp and Text, to meet the requirement of viewing test report and citing test results in scientific research articles in any occasion.

Multilingual support

Chinese-English language interface support, but also according to user requirements embedded in other language interfaces.

Intelligent operation mode:

Really automatic and unattended operation without human interference. You only need to add the sample to be tested according to the prompt. The repeatability of the test results is better.

Operating mode:

Computer operation


Test speed

< 1 min/time (without sample dispersion time)