What formulation type is indicated by pesticides that do not dissolve but remain suspended when mixed?

The correct formulation type indicated by pesticides that do not dissolve but remain suspended when mixed is a wettable powder. Wettable powders are dry formulations that are designed to be mixed with water to create a suspension. They contain active ingredients in a powdered form, along with additives that facilitate dispersal in water. When added to water, instead of dissolving, they form a suspension of small particles that remain visibly suspended throughout the liquid. This characteristic allows for effective application, especially in agricultural settings, as the suspended particles can adhere to surfaces and provide prolonged efficacy against pests.

In contrast, microencapsulated pesticides are designed to release their active ingredients over time but may not necessarily remain suspended without settling. Liquid concentrates are fully soluble in water and create a homogeneous solution rather than a suspension. Emulsifiable concentrates mix with water to form an emulsion, where droplets of the active ingredient are dispersed, but they also create a type of solution rather than a suspension with visible particulates. Thus, the properties of wettable powders make them the suitable choice for the specified scenario.