Associate Certified Entomologist (ACE) Practice Exam

What is typically the appearance of a suspension concentrate (SC)?

1. Clear liquid with no particles

2. Opaque liquid with suspended solid particles

3. Powder form requiring mixing with water

4. Dry granules that dissolve in water

The correct answer is: Opaque liquid with suspended solid particles

A suspension concentrate (SC) typically presents as an opaque liquid that contains solid particles suspended throughout the formulation. This characteristic appearance is crucial, as it indicates that the active ingredients are not dissolved in the liquid but are rather distributed in a small, uniform size throughout the mixture. The opacity helps users recognize that these particles are intended to remain suspended until the mixture is agitated or used, ensuring that the active ingredients are delivered effectively during application. This formulation is often used for pesticides and other agricultural products, as it allows for a stable mixture that provides uniform distribution of the active ingredient when sprayed or applied. In contrast, other options describe different forms of pesticide formulations. A clear liquid without particles would indicate a solution, not a suspension concentrate, while a powder form or dry granules describes formulations that require reconstitution in water before use, which does not match the typical characteristics of a suspension concentrate.