What separates a suspension from a solution in pesticide terms?

Suspensions are defined by their physical characteristics, particularly in the context of pesticide formulations. The key distinguishing feature is that suspensions contain larger particles that do not dissolve in the liquid medium. This means that these particles can be seen with the naked eye, and they will settle out over time if left to stand. This is in contrast to solutions, where the solute is completely dissolved at a molecular level, resulting in a homogeneous mixture.

In practical applications, this distinction is significant because it affects how the product is formulated, stored, and applied. For instance, suspensions often require agitation before use to ensure even distribution of the larger particles. Understanding this characteristic helps applicators choose the right product and application method for their specific needs.