Measuring Suspended Particle Size with High Accuracy

The average particle size and its distribution are undoubtedly major characteristics of a powder, and the average particle size occurs in all correlations related to the powder behaviour in, e.g., packed, moving or fluidized beds, in pneumatic conveying and in dust filtration. When traditional sieving can no longer be used for smaller particles, instrumental techniques, i.e. particle size analysers, are used. These analysers extended the measured particle size to the micron or sub-micron sizes, and span a fairly wide size range. Among these instrumental techniques, major developments have taken place, resulting in a wide range of equipment and including, e.g., sedimentation, electrical sensing methods, laser diffraction, dynamic light scattering (for molecules and sub-micron particles), X-ray scattering, acoustic methods, and/or focused beam techniques [1-15]. The common equipment and a non-exhaustive list of companies involved are given in Table 1. Volume 2 Issue 6 2017