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.

SW-846 Test Method 9045D: Soil and Waste pH

The following document provides information on the electrometric procedure for measuring pH in soils and waste samples, including solids, sludges, or non-aqueous liquids.

This method is an SW-846 Method-Defined Parameter (MDP), meaning that it may not be modified when used for Resource Conservation and Recovery Act (RCRA) testing. For more information, see the Methods Innovation Rule page.

You may need Adobe Reader to view files on this page. See EPA’s About PDF page to learn more.