What is BS EN ISO 21873-2:2012?

BS EN ISO 21873-2:2012 is a technical standard that specifies the principles and methods for the determination of particle size distribution in powdered materials using dynamic image analysis. It provides guidelines for the measurement, analysis, and reporting of particle size data. This standard was developed by the British Standards Institution (BSI) in accordance with the international standard ISO 21873-2.

Importance of Particle Size Distribution Analysis

Particle size distribution analysis plays a crucial role in various industries, including pharmaceuticals, cosmetics, food processing, and mining. Understanding the particle size distribution of powdered materials is essential for quality control, process optimization, and product development.

By analyzing the particle size distribution, manufacturers can ensure consistent batch-to-batch quality, improve production efficiency, and enhance the performance characteristics of their products. It helps in determining factors such as solubility, stability, flowability, and compatibility, which directly impact the overall product quality.

Methodology of BS EN ISO 21873-2:2012

The methodology outlined in BS EN ISO 21873-2:2012 involves capturing images of particles in suspension and analyzing them using specialized software to determine their size distribution. The process starts with dispersing the powder sample in a liquid medium to create a homogeneous suspension. The suspension is then introduced into an imaging apparatus capable of capturing high-resolution images of individual particles.

The captured images are subjected to image analysis algorithms that detect and measure the size and shape parameters of each particle. These parameters include particle diameter, length, width, aspect ratio, and circularity. The software calculates the frequency of occurrence for different particle sizes and generates a statistical analysis report.

Advantages and Limitations

BS EN ISO 21873-2:2012 provides several advantages over traditional particle size analysis methods. It offers higher accuracy, repeatability, and sensitivity in determining particle sizes. The dynamic image analysis technique allows for better resolution and differentiation of particles compared to other methods such as sieve analysis or laser diffraction.

However, there are some limitations to consider. The technique may not be suitable for materials with significantly fibrous or irregular-shaped particles. Moreover, the analysis process can be time-consuming and requires specialized equipment and software. It is essential to follow the standard's guidelines carefully and validate the instrument's performance to ensure accurate and reliable results.

In conclusion, BS EN ISO 21873-2:2012 provides a standardized methodology for particle size distribution analysis using dynamic image analysis. It plays a crucial role in various industries by enabling precise characterization of powdered materials. Manufacturers can leverage this standard to optimize their processes, enhance product quality, and meet regulatory requirements.