What characteristic changes can indicate that a product mix is physically incompatible?

The characteristic that indicates a product mix is physically incompatible is the separation, gel formation, or precipitation of solids. This phenomenon occurs when components in a mixture do not interact properly, leading to noticeable physical changes. Such changes suggest that the ingredients cannot remain combined effectively, which can compromise the overall performance of the pesticide application.

When products are physically incompatible, they may separate into distinct layers, form gels, or produce solid particles that settle out of the mixture. This can lead to uneven distribution when applied, reducing the efficacy of the application. Consequently, recognizing the signs of physical incompatibility is essential for ensuring that products function as intended and achieve the desired pest control outcomes.

The other options—such as higher effectiveness of the product mix, improved coverage of spray droplets, and an increase in viscosity of the mixture—might reflect desirable attributes of a well-formulated product, but they do not specifically indicate incompatibility. Incompatibility will typically manifest through negative physical changes rather than enhancements in performance.