Preservative Antimicrobial Effectiveness TestingPreservative Antimicrobial Effectiveness Testing Laboratories
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Preservative Antimicrobial EffectivenessPreservative Antimicrobial Effectiveness Testing

Antimicrobial Effectiveness test / Preservative Efficacy Testing / USP 51

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Antimicrobial preservatives are added in the products to protect them from microbial contamination.
Antimicrobial efficacy test evaluates the effectiveness of an antimicrobial preservative.

Where antimicrobial preservatives are added to protect the product from microbial growth,similarly,antimicrobial preservatives are also added to inhibit the microbial growth that may be introduced from daily use of the product. According to USP51 standard, five indicator organisms are Escherichia coli, Staphylococcus aureus,Pseudomonas aeruginosa,Candida albicans and Aspergillus niger.Additional microorganisms can be tested depending upon the product demand. The test is carried out in such a way that the product is challenged with the known strains of the microorganisms. Samples are tested at different intervals to determine the survival of the organisms. The test demonstrate the antimicrobial efficacy of the product to stop the growth of organisms..

USP 51 antimicrobial effectiveness test

The microorganism survival is monitored till 28 days.

A minimum of 100 150 ml or grams of the product is needed to run this test.

For Antimicrobial effectiveness testing call 800-282-7102 or email

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Last updated 2-25-15

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