What does the term "physically incompatible" mean in the context of product mixes?

The term "physically incompatible" in the context of product mixes refers to the scenario where two or more substances, when combined, alter the mixture's physical characteristics in a negative manner. Specifically, this can include phenomena such as separation, precipitation, or the formation of layers that prevent the mixture from functioning as intended.

When products are physically incompatible, it signifies that they do not blend well, leading to issues like clumping, settling, or stratification. Such characteristics can impair the efficacy of the spray mixture, making it less effective for its intended application. Therefore, identifying and understanding physical incompatibility is crucial for anyone mixing products, as it directly impacts the performance and safety of the application.

The other options suggest outcomes that are either neutral or positive regarding product mixing, which do not align with the definition of physical incompatibility wherein the mixture exhibits undesirable physical changes.