The following document provides information on the method on n-hexane extractable material (HEM), which refers to Method 1664, Revision A, Publication No. EPA-821-R-98-002.
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.