In order to analyze specific powders’ particle sizes, it is essential to understand the advantages and disadvantages of the method of particle size analysis. Knowing the advantages and disadvantages is important when making a choice between instruments and then successfully purchasing the right instrument.
Air Permeability Fisher Method
A fisher sub sieve sizer operates on the method known as the air permeability fisher method. In comparison to other particle sizing methods, the air permeability fisher method has several advantages. These include low cost, simplified sample dispersion, ability to test on magnetic powders or hard alloy, and direct reading of particle size.
However, the main disadvantage with this method is that only the average particle size is available, particle size distribution is unobtainable.
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Image Credit: DANDONG HMKTEST INSTRUMENT CO., LTD
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Image Credit: DANDONG HMKTEST INSTRUMENT CO., LTD
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Image Credit: DANDONG HMKTEST INSTRUMENT CO., LTD
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Image Credit: DANDONG HMKTEST INSTRUMENT CO., LTD
Sieve Analysis
Sieve analysis, especially advanced air jet sieve analysis, offers the advantages of fast and easy handling, low instrument cost, as well as accurate and reproducible particle sizing results. In addition, it also enables a shortened analysis time and the capability to separate particle size grades or fractions by meshes. Naturally, the result is that the air jet sieve method has become a widely accepted alternative analysis method that uses laser light or image processing.
Laser Diffraction
Advantages of laser diffraction include easy operation, a broad test range, a high degree of accuracy and repeatability on-line test. Further, there is a possibility of performing a dry test as well.
However, this method’s results are dependent on the distribution pattern. Moreover, this instrument comes at a high cost.
Microscope Imaging
Microscope imaging is a simple, direct test procedure, and allows for shape analysis.
However, it suffers from a few disadvantages. For instance, it consists of a long test cycle, provides relatively poor representation, and does not allow for the testing of ultra-fine particles.
Sedimentation
Sedimentation’s benefits are that it comes at a low price, enables continuous operation, produces a high degree of accuracy and repeatability, and a relatively broad test range. However, sedimentation is associated with a long test cycle.
Coulter
The advantages include easy operation, a shorter testing cycle, and relatively high accuracy. However, coulter’s drawbacks are its narrower size range. Moreover, it also creates easily blocked apertures.
Electron Microscope
Electron microscopes can conduct high resolution measurements of particles of nanometer size. However, there also is the possibility of alternation of particles in the process of sample preparation. Moreover, this microscope only represents a small portion of the overall sample and comes at a high cost.
Ultrasonic
Ultrasonic is a method of direct testing on highly concentrated liquid. Nevertheless, it can only be performed in low resolution.
In terms of particle size, DANDONG HMKTEST INSTRUMENT CO., LTD caters to the demand of international users. In the field of particle size, some powders are incapable of being measured by laser particle size analyzers. To develop this technology, Aimsizer cooperates with a number of internationally renowned experts.
This information has been sourced, reviewed and adapted from materials provided by AimSizer Scientific Ltd.
For more information on this source, please visit DANGDONG HMKTEST INSTRUMENT CO., LTD.