Phials are containers which usually hold liquids or gasses. Most potions and potion ingredients are bottled in phials and are consequently sold in those amounts.
One set of glass or crystal phials are part of the required equipment for classes at Hogwarts School of Witchcraft and Wizardry. One place first-years can aquire them are in Wiseacre's Wizarding Equipment in Diagon Alley: glass phials cost three Galleons and crystal phials cost seven.
There are quite possibly many different sorts of phials, but the two known sorts are made of glass and crystal.
- Harry Potter and the Philosopher's Stone (First mentioned)
- Harry Potter and the Chamber of Secrets (film)
- Harry Potter and the Half-Blood Prince (film)
- Harry Potter and the Deathly Hallows: Part 2
- Harry Potter Trading Card Game