1. n. [Drilling Fluids]

A type of gas detector tube that quantitatively measures a gas that is passed through the tube by the length of the stain it generates chemically in the tube. Dräger tubes are used in Garrett Gas Train tests for sulfides and carbonates.

Alternate Form: Dräger tube

See: carbon dioxide,  carbonate,  carbonate test,  Garrett Gas Train,  hydrogen sulfide,  sulfide,  sulfide test