👉 A selecting fluid, often used in processes like electrophoresis and chromatography, is a substance that facilitates the separation of molecules based on their interactions with a stationary phase or matrix. These fluids are typically designed to have specific chemical properties that allow them to bind selectively to target molecules, such as proteins or nucleic acids, while allowing others to pass through more freely. By carefully choosing the fluid's composition, scientists can control the separation efficiency and specificity, making it a crucial component in analytical chemistry and molecular biology techniques.
