Many industries utilize dry solid materials and powders (collectively referred to as bulk solids in this article) for producing and manufacturing products. It is common for particle size to be a part of the specifications for raw, process intermediate and finished products. Depending on the process, the particle size of bulk solids can change via several means, including milling, grinding, agglomerating, crystallizing, screening and so on. These steps that involve a direct change to the material are generally the primary focus when designing a process. Often, the equally important aspect of ensuring that the material flows consistently and reliably between process steps is overlooked, leading to systems operating under design capacity throughout their lifetime.