Depends on the strength. For example, you'll find potions as drops - a Tincture Of Health is quite weak, and is a low level potion. The levels look like this:-
- Natural Water = Sip of
- Clear Water = Tincture of
- Pristine Water = Dram of
- Cleansed Water = Potion of
- Filtered Water = Solution of
- Purified Water = Elixir of
- Cloud Mist = Elixir of
When you make your own potions - in this case a potion of Restore Health - it is the solvent that determines strength.
- Natural Water - Makes Level 3 potions
- Clear Water - Makes Level 10 potions
- Pristine Water - Makes Level 20 potions
- Cleansed Water - Makes Level 30 potions
- Filtered Water - Makes Level 40 potions
- Purified Water - Makes Veteran-Level potions for VR 1-5 Zones
- Cloud Mist - Makes Veteran-Level potions for VR 6-10 Zones
Hope this helps.