GB/T 13980-2008 Specifies Ionizing Radiation Density Meters. The standard clarifies its product classification, structural composition and basic parameters, and stipulates performance indicators such as Measurement accuracy and Stability. Strict requirements are put forward for the radiation protection and safety performance of equipment, and corresponding test and inspection methods are formulated. It also covers product labeling, Encasement, transportation and storage regulations. It provides a unified standard for the research and development, production, testing and use of Ionizing Radiation Density Meters, ensuring instrument measurement accuracy, ensuring user safety, and promoting industry standardization development.