Associate Certified Entomologist (ACE) Practice Exam

Which formulation type is characterized as readily dissolving in water and does not require agitation?

1. Wettable powders

2. Soluble powders

3. Microencapsulated formulations

4. Dry flowables

The correct answer is: Soluble powders

The correct formulation type that is characterized as readily dissolving in water and does not require agitation is soluble powders. Soluble powders are designed to dissolve completely in water without leaving any residue, making them ideal for applications where a clear solution is desired. This property allows them to be mixed easily with water and applied without the need for extensive mixing or agitation, streamlining the preparation process. Wettable powders typically require agitation to remain suspended in water before application, as they do not fully dissolve. Microencapsulated formulations involve active ingredients that are enclosed in a protective coating, which often leads to different dissolution and release characteristics compared to soluble powders. Dry flowables are similar to wettable powders but are processed to form a dry granule that can be mixed with water; however, they also need agitation to prevent settling and ensure uniform distribution. Therefore, soluble powders are unique in their ability to fully dissolve in water without agitation, making them the correct answer in this context.