Anti Microbial Inhibition Studies (Preservative Challenges) – USP 51

I.G. MicroMed provides comprehensive testing for Anti Microbial Inhibition Studies based on USP-51.  These procedures determine if your product will have the antimicrobial (preservative) functionality to allow regulatory acceptability and shelf stability under normal conditions.

Products are inoculated with high levels of 5 strains of organisms. : E. coli, Staphylococcus aureus, Pseudomonas aeurginosa, Candida albicans and Aspergillus brasiliensis. The  product is challenged for 4 weeks with an expected log reduction of 5 for the organisms of interest.

We can also modify challenge studies to your specific requirements.  For further information contact us at