1) Weigh a dry diaper, dunk it in water and let it hang until it stops dripping, then weight it again. Calculate the difference in weight, see how that equates to fluid ounces. My main concern is this would probably work great on inserts, but what about on diapers like AIOs?
2) Pour water directly on an opened diaper in small increments, fold the diaper and see if water comes out.
Do any of you have some suggestions? Once we figure this out, I am going science nerd on all of you with videos, tables, and more!