This part of ISO 3923 specifies the Scott volumeter method for the determination of the apparent density of metallic powders. It is applicable to powders that will not flow freely through a 5 mm orifice (see ISO 3923-1).
DS/ISO 3923-2:1994 history
1994DS/ISO 3923-2:1994 Metallic powders - Determination of apparent density - Part 2: Scott volumeter method