An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Use Dilution Method Performance Standard Revision Document

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 a PDF reader to view files on this page. See EPA’s About PDF page to learn more.