4ea6e2f8_sed_identification___ADOM_Wiki__Item_used
[Message] "Quaffing down this vile liquid suddenly causes you a lot of grief!" [When the message occurs] PC drinks the potion. (The potion is not identified if the PC dips anything in it either; it is still possible to identify oil of rust removal by material-based Identification though, since they are always white potions) [Item used] 
Oil of rust removal
Use-based identification - ADOM Wiki
Item used