Date recorded: November 11 2020

There are two kinds of dispersion methods available for particle characterization using laser diffraction – wet dispersion and dry dispersion. Choosing the most appropriate method depends on the natural state of the sample, ease of dispersion, and sample volume. Both methods have their own strengths and should be applied with care and consideration to ensure valid results.

Dry dispersion may be easy to apply as sample feed and applied dispersion energy are the only measurement variables that need careful attention. However, care must be taken to balance the requirements for dispersion against the risk of particle break-up. For this reason, many materials are unable to be characterized in the dry state and wet dispersion is required to measure the performance and stability of samples.

In this session, we will focus on method development for measurements in wet dispersion. This will cover the dispersion process, sampling, and setting appropriate measurement conditions. We will also discuss how important each of these factors are for materials with different particle sizes. This will be very useful for various industries such as cement, paints, inks, cosmetics, pharmaceuticals, food, etc. This will be a good chance for your companies to expand your application and compare the performance and stability of products using different dispersion methods.

This session is led by Dr. Chanwook Park, Malvern Panalytical's Applications Manager who has a wealth of knowledge in particle size, shape analysis. 

Join our free MasterClass series: 
- MasterClass 1: Introduction to particle size using laser diffraction.  More info 
- MasterClass 2: Expanding your applications with wet dispersion analysis.  More info 
- MasterClass 3: Method development and practical tips on sampling and maintenance for best quality results.  More info 
- MasterClass 4: Particle size applications and other particle analysis related measurements like particle shape.  More info