Innopharma News

Importance Of Particle Size Analysis In Pharma Manufacturing


Particle size analysis involves measuring and sorting particles by their size and mass to determine the range and distribution of particle sizes included in a sample. Particle size analysis can be applied to many different compounds, including powders, granules, and particles dispersed in fluids.

Keep reading to learn more about particle size analyzers and their industry uses, especially in pharmaceuticals, but in a wide variety of other industries as well.  


Particle Size Distribution as an Important Quality Control Measure 

Particle size analysis measures the particle size distribution (PSD) of a sample. The PSD provides a snapshot of the masses and sizes of each individual particle in a substance.  

Any industry that grinds or mills products use’s particle size analysis to determine whether their product reaches its quality and safety standards. Yet, measuring the PSD can be challenging. For one thing, particles are rarely perfectly spherical; as a result, there are fewer assumptions that can be made when analyzing particle size distribution. That’s why pharmaceutical companies, as well as other industries, rely on automated particle size analysis for quality control. 


Why Do Pharmaceutical Companies Need Particle Size Analysis? 

In the pharmaceutical industry the PSD is a Critical Quality Attribute (CQA). This is because particle size affects all aspects of manufacturability. Measures such as volume, shape, surface area, porosity influence not only the final product quality but every process step in-between to make the final product. The high standards of pharmaceutical quality control require measuring PSD, for the patient’s safety and efficacy.  Drugs must reach certain targets of uniformity and dissolution rates. Therefore, particle size measurement is critical for a product behavior profile, for bio-availability, absorption rate and shelf life,” as Sarah Moore writes in AZO Materials.  


What Other Industries Use Particle Size Analysis? 

Particle size analysis is not only used to ensure high quality of the final product in industries, including food, agriculture, cosmetics, ceramics, building materials, paint, mining, and forestry, but also to control the PSD of the product as it is been manufactured. 


Paint & Ink Industry

Paints and coatings regularly undergo particle size analysis to ensure that the pigment is dispersed uniformly in the paint ink. The PSD will affect the optical properties that determine the quality of the final finish seen of a painted product. These properties can include opacity, weather resistance, and undertone, to name a few. Particle size analysis is also used for the effective manufacturing of ink. The particle size of the pigment particles within ink influences the quality of the final product such as it’s colour strength and durability, so gaining insight into the fundamental properties of ink through particle analysis help’s manufacturers create higher quality product.  

Food & Drink Industry

In the food and drink industry, particle size analysis is used to check the quality control of products such as coffee, chocolate, and flour, who’s storage and stability rely on particle size. Without particle size control, powdered products can cake, dispersions such as milk can have stability issues and spoil all leading to waste. For this industry particle size also has bearing on the taste of the food and drink product. 

Aerosol Industry

The aerosol industry, for example in the production of asthma inhalers, particle size is of huge importance, because it determines the dispersive properties of the aerosol. Particle size analysis allows manufacturers of asthma inhalers to deliver the medication into the lungs of the inhaler user effectively and efficiently.  

Forestry & Mining Industry

In forestry and mining, particle size analysis can be used to characterize different soils or minerals. Doing so can help identify any impurities found in extracted minerals or metals that can affect the end product’s performance.  

Cosmetics Industry

Particle size analysis is similarly used in the cosmetics industry to examine formulation, identify raw materials, and perform quality control. With particle size analysis, cosmetic manufacturers can ensure that products have the desired properties, such as pigmentation, opacity, and so on. 


How Does Particle Size Analysis Work? 

Particle size analyzers are used in many industries, including the pharmaceutical industry, for quality control and product testing. 

In the pharmaceutical industry, four common methods to ascertain particle size are sieve analysis, laser diffraction, dynamic light scattering, and direct imaging techniques.

Real-Time In-Line Monitoring of the Impact of Process Parameter Changes on Critical Quality Attributes in Fluid Bed Granulation using Process Analytical Technology


Eyecon2 Direct Imaging Particle Analyzer  

The Eyecon2 is a direct imaging particle size analyzer. It can be used both on powders and bulk solids to rapidly understand particle size, shape, and variation. 

The Eyecon2 uses imaging to measure bulk wet and dry powders and calculates PSDs on the level of individual particles. The captured images are passed through an algorithm which can identify and measure particle size distributions. 

With Eyecon2, analysis is efficient and automatic, which reduces time and production cost and also minimizes workers’ exposure to hazardous materials. 

Find out more about Innopharma Technology’s Eyecon2 particle size analyzer and talk to a member of our team today!