The AOAC use-dilution methods (UDM) 955.15 (Staphylococcus aureus) and 964.02 (Pseudomonas aeruginosa) are laboratory assays used to measure the antimicrobial efficacy of liquid disinfectants on inanimate surfaces. Products must pass tests of both microbes for a hospital disinfectant claim.
EPA reassessed the method's performance standard. This document describes the reassessment and the resulting performance standard criteria changes.You may need Adobe Reader to view files on this page. See EPA’s About PDF page to learn more.