A Strangifier is a Tool item represented by a bottle with a gray color liquid, with label "GRAY SCIENCE KIT" and "STRANGIFIER". It is comparable to the Strange Bacon Grease. It can be obtained by fulfilling the requirements of a Chemistry Set, or certain strangifiers can be obtained from a Mann Co. Supply Crate. When completed, the Chemistry Set will drop a Strangifier of the type indicated by the Chemistry Set.