What is the definition of a suspension in the context of pesticide formulations?

In the context of pesticide formulations, a suspension is defined as a substance that contains undissolved particles mixed throughout a liquid. This means that the pesticide active ingredients are dispersed in the liquid but are not completely dissolved. As a result, suspensions typically require agitation before use to ensure an even distribution of the active ingredients when applying them.

This ability to contain undissolved particles is significant because it allows the pesticide to be applied in a manner where the active ingredients can effectively target pests. The physical properties of the suspension, including particle size and distribution, influence the pesticide's effectiveness and how it interacts with the environment during application.

Other choices refer to different concepts that do not accurately represent the specific definition of a suspension. For example, a measurement of pesticide concentrations pertains to the formulation's concentration rather than the state of the mixture itself, while a solution refers to fully dissolved substances without undissolved particles, and a dried pesticide formulation is not related to suspensions at all. Understanding these distinctions helps clarify the importance of different pesticide formulations and their appropriate applications in pest control.