MDARD Michigan Core Pesticide Applicator Practice Exam

What is the correct order for tank mixing after partially filling with carrier?

1. Add suspension products first

2. Add compatibility agent first

3. Add surfactants last

4. Add emulsion products first

The correct answer is: Add compatibility agent first

The proper order for tank mixing is crucial to ensuring that the pesticides and other products mix well and perform effectively without causing issues such as clumping or ineffective application. Adding a compatibility agent first is essential because it helps to ensure that the various products you plan to mix will work well together and will not react negatively with one another. The compatibility agent can break down any potential antagonisms that could prevent the products from mixing properly, thus ensuring a homogeneous mixture before other components are added. Following the addition of the compatibility agent, you would typically proceed to add other products in the recommended order—such as suspension products, emulsion products, and surfactants—to achieve the best results. Each type of product has a specific role and may require certain conditions to ensure they mix properly, which is why placing the compatibility agent at the forefront is so critical in the mixing sequence. This meticulous approach helps maximize effectiveness and safety when applying pesticides.