Something I have come across

[Wutdaf]

I have noticed during my research for some potions the the potion vial used needs to match one herb.

For Example:
Type I: Sticklewort= Primative Potion Vial
Type II: Vox's Dust= Crude Potion Vial
Type III: Violet Tri-Tube Sap= rough Potion Vial
Type IV: Blue vervain Bulb= Makeshift Potion Vial

Now I stop here because of all the next levels the herb vary for the poison and disease cure potions.
But the potion vial seems to stay the same for the corrosponding level.

I just want to know if this is a correct Theory. If not, please correct me. Also I am still having problems with mist potions and Formed Suspensions.

[Gaell Stormracer]

That's correct, and that's explicitly stated in the updated in-game books.