Particle Size Analysis Overview

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This paper reviews different analytical techniques for particle size analysis, and is intended to help scientists new to particle size analysis understand their various strengths and weaknesses in order to select the proper technique for their samples.

INTRODUCTION

What is a particle? The simplest definition is a minute portion of matter. Within the scope of this document particles do not include subatomic particles such as electrons, protons, neutrons, quarks, etc. Particles measured by the techniques described here include solids (powders), solids in liquids (suspensions), and liquid/liquid emulsions. Not all particles exist as individual entities. They have a habit of sticking together to form various kinds of clusters, or agglomerates. In the field of particle technology, we typically define agglomerates as a loose arrangement of larger structures while aggregates are denser, harder to disperse collectives.

This paper reviews different analytical techniques for particle size analysis, and is intended to help scientists new to particle size analysis understand their various strengths and weaknesses in order to select the proper technique for their samples.