👉 The minimum fluid refers to the smallest amount of liquid that can be present in a system or solution, typically defined as the concentration at which a substance begins to exhibit significant effects or changes in its properties. In simpler terms, it's the point at which a solution becomes visibly or measurably different from its pure state, often due to the presence of even small amounts of solute. This concept is crucial in chemistry and various scientific fields for understanding how substances interact and behave under different conditions.