Part 1 of the GB/T 1479.1-2011 uses the funnel method to determine the Loose Bulk Density of metal powders. The standard specifies the principle of using the funnel to naturally flow the metal powder into a specific container to determine the Loose Bulk Density. Specification parameters for instruments such as funnel and receiving containers explain the preparation requirements of metal powder samples including collection and processing. Detailed specifications for powder filling, measurement and other operation steps provide standards for unified and accurate determination of the Loose Bulk Density of metal powders. It is of great significance for the control of metal powder mass and related production processes.