We would recommend you to clean all the spare parts by hand immediately after using the Emulsionizer.
If you do use a dishwasher, only the borosilicate glass jar, the filter and the discs should be loaded into it.
CAUTION: The wooden parts of the Emulsionizer should NOT be cleaned in the dishwasher, as they could get damaged in the process (if needed, you can remove the handle from the filter).