Particle Size Determination Via Laser Scattering

4 September 2023

Particle Size Determination Via Laser Scattering


In the world of materials science, the determination of particle size is a fundamental aspect. This parameter can influence a number of material properties, including reactivity, stability, and flow behavior. One of the most precise and reliable methods for determining particle size is laser light scattering, or “Laser Scattering”. This article will explore the concept of particle size determination via laser light scattering, making the topic accessible even to a non-expert audience.

What is Laser Light Scattering?

Laser light scattering is a technique that uses the light from a laser to determine the size of particles. The basic principle is simple: when a beam of light hits a particle, the light is scattered in different directions. By analyzing the scattering of light, it is possible to determine the size of the particle.

How Does Laser Light Scattering Work?

Laser light scattering works in three main stages:

  • Illumination: A beam of laser light is directed onto the sample containing the particles.
  • Scattering: The particles in the sample scatter the light in different directions.
  • Analysis: A detector measures the intensity of the scattered light at different angles. These data are then analyzed to determine the size of the particles.

Advantages of Laser Light Scattering

Laser light scattering offers a number of advantages over other methods of particle size determination:

  • Precision: This technique can determine the size of particles with a high degree of precision.
  • Versatility: It can be used to analyze a wide range of materials, including liquids, solids, and aerosols.
  • Speed: Laser light scattering can provide results in relatively short times.

Applications of Laser Light Scattering

Particle size determination via laser light scattering has a wide range of applications in various sectors.

Pharmaceutical Industry

In the pharmaceutical industry, particle size can influence the effectiveness of a drug. For example, the size of particles in a pill or injectable solution can affect the rate at which the drug is absorbed by the body. Here are some key points:

  • Quality Control: Particle size can be an important indicator of the quality of a drug.
  • New Drug Development: During the development of new drugs, particle size can be a critical factor to consider.

Food Industry

The food industry also greatly benefits from particle size determination via laser light scattering. This can influence both the quality and consistency of food products. Here are some examples:

  • Chocolate Production: The size of cocoa and sugar particles can influence the consistency and taste of chocolate.
  • Beverage Production: Particle size can influence the appearance, taste, and stability of beverages.


Particle size determination via laser light scattering is a powerful and versatile technique that finds application in a wide range of sectors. Whether it’s developing new drugs or producing high-quality chocolate, the ability to accurately measure particle size can make a big difference.

Here at IMS Srl, we are proud to contribute to the development of this technology through our expertise and technological solutions. We will continue to explore and develop new ways to use laser light scattering to improve the quality and effectiveness of products in various sectors.

For more information on our particle size determination solutions, contact us at +390239002128 or find us at Via Venezia Giulia 23, 20157 Milan.

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