Fluid Thioglycollate Medium, FTM Crimp cap with septum
Fluid Thioglycolate Medium (FTM) is a universal complex medium. Thioglycolate and L-Cystine in the medium reduce the redox potential to create an anaerobic atmosphere. Additionally, they inactivate mercury and other heavy metal compounds. Agar further reduces the rapid diffusion of oxygen through the medium but may lead to slight turbidity in larger volumes (filled bottles). Resazurin indicates the reduction potential of the medium, and a color change to pink indicates an increased concentration of oxygen.
