Antimicrobial Effectiveness Test
USP 51 test method determines the antimicrobial efficacy of preservatives that offer protection from microbial contamination. USP 51 test is performed on aqueous-based products including medical, cosmetics, and personal care products.
Antimicrobial preservatives play a vital role to maintain the quality and integrity of products by limiting the growth of microorganisms. Thereby, USP 51 is established to check the effectiveness of antimicrobial preservatives against test microorganisms, this in turn ensures the product’s safety for its intended use.
Organisms typically used in this method: Staphylococcus aureus (ATCC 6538P), Klebsiella pneumoniae (ATCC 4352), Escherichia coli (ATCC 8739), Pseudomonas aeruginosa (ATCC 15442), Enterococcus hirae (ATCC 10541), MRSA (ATCC 33591), Salmonella entercia (ATCC 10708), Candida Albicans (MTCC 3017), Aspergillus niger (ATCC-16888)
At Microbial Investigations (MIS), we have outstanding testing facilities to perform antimicrobial preservative challenge tests – USP 51.
Our microbiology experts design and conduct antimicrobial assays and supervise microbiological activities on a regular basis. Our constant approach is to achieve reliable and reproducible results that can help our clients to develop high-quality products.
Contact us to get a quote on USP 51 or know more about our testing services.
USP 51 test determines the efficacy of antimicrobial preservatives used to prevent microbial contamination and spoilage.
USP 51 test can be applied to aqueous-based products such as injections, eye drops, syrups, cosmetics, pet care, and personal care products.
The turnaround time for USP 51 test is 4 to 5 weeks.
At Microbe Investigations, we test for the USP 51 using the following strains : Pseudomonas aeruginosa (ATCC 15442), Escherichia coli (ATCC 8739), Staphylococcus aureus (ATCC 6538P), Enterococcus hirae (ATCC 10541), Klebsiella pneumoniae (ATCC 4352), MRSA (ATCC 33591), Salmonella enterica (ATCC 10708), Candida Albicans (MTCC 3017) and Aspergillus niger (ATCC-16888).