IEC 63093-7:2018 Ferrite cores. Guidelines on dimensions and the limits of surface irregularities EER-cores

Visual inspection (testing)
Assessed quality
Chipping resistance
Length
Area
Edge
Cracking
Surface properties
Flaws
Electronic equipment and components
Magnetic devices
Electrical components
Defects
Surface defects
Ferrites
Magnetic cores

Link: IEC 63093-7:2018 Ferrite cores. Guidelines on dimensions and the limits of surface irregularities EER-cores
Source: BSI Standards