 | |
| Industrial incubator | |
| Type: | Technology |
| Continuity: | Marvel Universe |
| Aliases: | None |
| Availability: | Uncommon item |
| Manufacturer: | Unknown |
| Owners: | Unknown |
| 1st appearance: | Wolverine, Vol. 5 #3 |
A Negative flask is a fictional item featured in comic books published by Marvel Comics. It is associated with the character of Wolverine and appears in the "Hunting Season" storyline from Wolverine, Volume 5. It first appeared in issue #3 of that series in July, 2013.