Clausen Medium
Details
Clausen Medium is recommended for sterility testing as per Nordic Pharmacopoeia. This medium is also called as HS-T (Dithionite Thioglycollate) Medium and is recommended for sterility testing by the Nordic Pharmacopoeia Board referred as microbial-contamination test. Either of the methods, Membrane filter method or Dilution method can be are used for microbial conatmination test. L-cystine and sodium thioglycollate act as reducing agents,polysorbate 80 and lecithin are added in this medium to overcome the effects of cationic agents. Resazurin dye acts as redox indicator.
