👉 Upon fluid, also known as upon fluid or upon liquid, is a type of colloidal suspension where solid particles are dispersed in a liquid medium but remain suspended due to their size and surface properties, preventing them from settling out. This suspension is stable because the particles repel each other, either through electrostatic forces or steric hindrance, keeping them evenly distributed throughout the liquid. Upon fluids are commonly used in various applications, including paints, cosmetics, and pharmaceuticals, due to their consistent texture and ability to maintain uniformity without separating over time.
