Particle Size Measurement Techniques

• Direct observation (image analysis)

• Sieving; n Sedimentation – settling rate;

• Coulter counter – electrozone sensing;

• Gas adsorption – BET (SSA back extrapolation to size);

• Permeability (gas or liquid) e.g. Blaine, FSSS

• Light scattering – laser diffraction and Photon Correlation Spectroscopy / Dynamic Light Scatterin