👉 A basis fluid, also known as a base fluid or carrier fluid, is a fundamental component in the formulation of various industrial fluids and lubricants. It serves as the primary medium that holds other additives, such as viscosity modifiers, detergents, and anti-wear agents, in place. The basis fluid's primary function is to provide a stable, consistent, and compatible environment for the additives to ensure they perform their intended roles effectively. Common basis fluids include mineral oils, synthetic oils, silicones, and water-based fluids, each chosen based on the specific requirements of the application, such as temperature range, viscosity, and compatibility with other components.