This part of JB/T 8264 specifies the method for measuring the fluidity of electrophotographic dry two-component developer carrier (referred to as carrier) using the standard funnel method. This section applies to carriers that can flow freely through a standard funnel with a hole diameter of 2.5 mm.
JB/T 8264.2-2013 history
2013JB/T 8264.2-2013 Carrier of electrostatic dry developer.Part 2: Test method for flowability