The GB/T 14624.3-2008 standard specifies an inspection method for offset ink fluidity, which is suitable for measuring the flow characteristics of offset ink under specified conditions. The method evaluates the fluidity of an offset ink by measuring the diameter of a certain volume of inks sample expanding into a cylinder within a specified time under a specific pressure, expressed in millimeters. The required tools and materials are detailed in the standard, including Ink knife, Glass plate, ethanol, cotton yarn, ink suction tube, transparent scale and fluidity meter. The method provides a standardized test flow for the quality control of offset ink.