ASTM D7483-2008 Standard Test Method for Determining Dynamic Viscosity and Derivative Kinematic Viscosity of Liquids with a Swinging Piston Viscosity meter is a standard method for measuring the viscosity of liquids such as lubricating oils. This method uses an oscillating piston Viscosity meter to measure the dynamic viscosity of liquids and derive the kinematic viscosity. Its application range includes newtonian fluid and non-newtonian fluid, and the measurement results can be used to evaluate the flowability and lubrication performance of lubricating oils. The method has the characteristics of easy operation, fast measurement and high accuracy, and is widely used in petroleum, chemical and mechanical lubrication fields.