Knowledge How do you measure particle size distribution?
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Tech Team · Kintek Solution

Updated 2 months ago

How do you measure particle size distribution?

4 Key Methods to Measure Particle Size Distribution

How do you measure particle size distribution?

Particle size distribution can be measured using various methods.

One of the most traditional and commonly used techniques is sieve analysis.

This method involves passing a sample through a series of sieves with progressively smaller mesh sizes.

The retained material on each sieve is weighed to determine the distribution.

Sieve Analysis

In sieve analysis, a stack of sieves with different mesh sizes is used.

The sample is placed on the top sieve, which has the largest mesh size.

Each subsequent sieve in the stack has a smaller mesh size.

The stack is then shaken mechanically, allowing particles to pass through the sieves according to their size.

The material retained on each sieve is weighed to determine the percentage of particles of each size.

Sieve analysis is standardized by organizations like ASTM and ISO.

These organizations provide detailed guidelines on sieve sizes, test procedures, and acceptance criteria.

Regular maintenance and calibration of the sieves are crucial to ensure accurate results.

This method is widely used in industries dealing with granular materials such as minerals, soil, chemicals, and agricultural products.

Other Methods

Direct Image Analysis (SIA and DIA) involves capturing images of particles and analyzing them to determine size and shape.

Static Image Analysis (SIA) captures a single image.

Dynamic Image Analysis (DIA) captures images of particles in motion.

Light Scattering Techniques (SLS and DLS) are used for measuring particle sizes in a range from submicron to millimeters.

Laser diffraction (SLS) measures the diffraction pattern of light scattered by particles.

Dynamic light scattering (DLS) measures fluctuations in light scattering caused by particle movement.

Sample Preparation and Analysis

Before sieving, the sample may need to be prepared.

This can include drying, conditioning, or dividing the sample.

The choice of sieves and the amount of sample are determined based on the material and the applicable standard.

The sieving process is followed by weighing the fractions retained on each sieve.

This data provides a detailed understanding of the particle size distribution in the sample.

Conclusion

Sieve analysis is a fundamental method for measuring particle size distribution.

It offers a straightforward and effective approach for a wide range of materials.

Other advanced techniques like image analysis and light scattering provide additional capabilities.

These techniques are especially useful for finer particles and in research settings.

The choice of method depends on the specific requirements of the material and the desired level of detail in the particle size analysis.

Continue exploring, consult our experts

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