Structural Pest Control Applicator Practice Exam

What is the difference between emulsifiable concentrates and flowables?

1. Flowables start as solids; emulsifiable concentrates start as liquids.

2. Flowables start as liquids; emulsifiable concentrates start as solids.

3. Both are solids before application.

4. Both require dilution before use.

The correct answer is: Flowables start as solids; emulsifiable concentrates start as liquids.

Emulsifiable concentrates and flowables are both formulations used in pest control, but they are fundamentally different in their composition and the way they are prepared for use. Emulsifiable concentrates are typically made from active ingredients that are dissolved in a solvent, resulting in a liquid form that can be mixed with water to create an emulsion. This allows for easy application and effective dispersion of the active ingredient when applied. On the other hand, flowables are formulations where solid particles are suspended in a liquid. These solids do not completely dissolve but are finely ground and can be mixed with water to create a flowable solution. This allows for the delivery of active ingredients that may not easily dissolve, enhancing their effectiveness when applied to the target area. The correct understanding highlights that flowables start as solids that are suspended in a liquid medium, whereas emulsifiable concentrates primarily start as liquids that form emulsions upon dilution with water. This distinction is important for pest control applicators as it affects how each product is mixed, applied, and the efficacy of the pest control measures taken.