What is the purpose of TTC indicator in M-TGE Broth?

Document ID

Document ID TE864

Version

Version 1.0

Status

Status Published

Published Date

Published Date 13/03/2017
Question
What is the purpose of TTC indicator in M-TGE Broth?
Summary
Colonies grown with m-TGE with TTC Indicator appear pink to red aid visibility.
Answer
The m-TGE and m-TGE broth with TTC are used for the detection of heterotrophic bacteria in water. The m-TGE with TTC contains a redox dye, triphenyltetrazolium chloride, which colors the colonies red, thus enhancing their visibility.