Here attached a link to an example of the product type "ink" (SET 114)
As a starting point, the following considerations could be made when determining the exact filling volume:
Pseudo sql "select attributeValue5 from products where productTypeId = 144
The values of the filling volume as shown in the screenshot, but are not the actual values of the product but correspond to the attributes of clusters , where the product is located.
The corresponding conversion to 100ml can then be done by means of a three-set.