Fluid Thioglycollate Medium

Fluid Thioglycolate Medium is a universal complex medium. It is recommended for sterility testing of pharmaceutical products according to the European and US Pharmacopoeia. Thioglycolate and L-Cystine in the medium reduce the redox potential of the culture medium to create an anaerobic atmosphere. Also, mercury and other heavy metal compounds are inactivated by these agents. The content of agar further reduces a 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. An increased concentration of oxygen is indicated by a color change to pink.

Fluid Thioglycolate Medium is used for the isolation and cultivation of fastidious anaerobic as well as for aerobic microorganisms. This is used for sterility control of pharmaceutical products.

Our ready to use media provide the highest level of quality and testing confidence. They have been formulated and tested to meet the pharmacopoeia requirements. Sterility testing media and rinse solutions are manufactured in an ISO 9001, environmentally controlled production center. Each lot undergoes a stringent quality control (QC) procedure, including pH, sterility and growth promotion tests. Our manufacturing approach ensures the highest level of clarity for our media and rinsing fluids, therefore improving accuracy and significantly reducing the risk of incorrect interpretation and false results.

STERITEST is a registered trademark of Merck KGaA, Darmstadt, Germany