Disinfectant Services

AOAC Disinfectant Use Dilution

FDA guidelines for testing hard surface disinfectants to determine the efficacy of disinfectants against three organisms: Pseudomonas aeruginosa, Staphylococcus aureus, and Salmonella. This methodology is based on AOAC methods. There are several different claims made under this test.

A log reduction greater than or equal to 99.99% of the bacteria must be observed in order for the disinfectant to pass this test.

 

Disinfectant Kill-Time

This microbiology lab test examines the rate-of-kill antimicrobial formulations tested against single selected pathogenic microorganisms such as Pseudomonas aeruginosa, Staphylococcus aureus, and Salmonella, and produces data that provides basic information on such formulations. This test is often used to characterize kill kinetics and the substantial efficacy of a wide range of sanitizer products.

The time-kill study involves observing the same process at certain times in minutes intervals within exposure to create a more comprehensive report of the organism kill kinetics of the product, from 30 seconds to 15 minutes.

A log reduction greater than or equal to 99.99% of the bacteria must be observed in order for the disinfectant to pass this test.

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