The DIN 53222-1990 standard specifies a method for determining the viscosity of liquids using a sedimentation rod Viscometer. The standard is suitable for newtonian and non-newtonian fluids, especially for rapid evaluation of liquid viscosity in industrial and laboratory environments. The standard describes in detail the design of the sedimentation rod, the operation steps, Measurement conditions and data processing methods. By measuring the sedimentation rod sinking speed in the liquid, the dynamic viscosity of the liquid can be calculated. The method has the characteristics of simple operation and reliable results. It is widely used in viscosity measurement in chemical, food, pharmaceutical and other industries, providing an important basis for product quality control and research and development.