Thioglycollate Fluid Medium Condalab 4663

Thioglycolate Fluid Medium EP/USP/ISO is used for the sterility test and the cultivation of Clostridium perfringens. This medium is a standard medium formulated and recommended by the European Pharmacopeia, USP. APHA, and FDA. The reducing agents thioglycolate and L-Cystine allows anaerobiosis that is adequate even for fastidious anaerobes. The -SH groups of these substances can inactivate arsenic, mercury, and other heavy metal compounds.

Thioglycolate media is suitable for the examination of materials that contain heavy metals or heavy metal preservatives. In the present formulation, a special agar with high viscosity and low turbidity is used. There is a slow cooling process recommended for the prevention of stratification. The high viscosity of the fluid thioglycolate medium prevents rapid uptake of oxygen. An increase in the oxygen content is indicated by the redox indicator sodium resazurin which changes colour to pink.