Ultritium compound 902

Diagram of a molecule of ultritium compund 902

A type 12 Hillebrand detonator was a device that could be used to activate certain chemical substances, like Ultritium compound 902.

In 2367, ultritium compound 902 was stored on board the Federation starship USS Enterprise-D in an inert liquid form. In order to activate the compound, an energetic gamma pulse, emitted by a type 12 Hillebrand detonator, could be used. (TNG: "Night Terrors")

This detonator was mentioned in the graphics created for the remastered episode. It was named after Memory Alpha Admin Jörg Hillebrand.