EN ISO 11850:2012 is a technical standard that provides guidelines for the determination of particle size distribution in powders. It specifies the laser diffraction method, which is commonly used for this analysis.
The Importance of Particle Size Analysis
Particle size analysis plays a crucial role in various industries including pharmaceuticals, food processing, mining, and manufacturing. Understanding the particle size distribution of powders is essential as it affects their behavior, performance, and quality in different applications.
This information helps researchers and manufacturers optimize processes, ensure product consistency, and meet industry standards. By accurately measuring particle size, they can control factors like dissolution rates, flow properties, and packing characteristics.
Principles of EN ISO 11850:2012
The standard outlines the principles behind the laser diffraction method used to determine particle size distribution. Laser diffraction works based on the scattering of light by particles suspended in a liquid or gas medium.
First, a sample is dispersed into a suitable medium, ensuring individual particles are well separated. Then, a laser beam is directed through the suspension, and the scattered light is measured from different angles.
The measurement of scattered light provides information about the size and shape of particles present in the sample. This data is then used to calculate the particle size distribution using mathematical models.
Benefits and Limitations
EN ISO 11850:2012 offers several benefits for particle size analysis. It is a relatively quick and non-destructive method, allowing for rapid characterization of powders. The laser diffraction technique also provides a wide dynamic range, making it suitable for a broad range of particle sizes.
However, it is essential to consider the limitations of this method. Laser diffraction assumes a spherical shape for particles and limited absorption or scattering properties of the sample. Non-spherical or optically active particles might require alternative techniques to obtain accurate results.
Overall, EN ISO 11850:2012 provides a standardized approach for particle size analysis using laser diffraction, ensuring consistent and reliable data across industries. Precise control over particle size distribution is vital for optimizing processes and achieving desired product performance in various applications.
Nina She