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Oil and Grease
Method 1664, Revision A: N-Hexane Extractable Material (HEM; Oil and Grease) and Silica Gel Treated N-Hexane Extractable Material (SGT-HEM; Non-polar Material) By Extraction and Gravimetry
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- Fact sheet (February 1999) about the test method.
- Test method published in the Federal Register (May 14, 1999)
- Method 1664, Revision A | Print Version (PDF) (213 K, 28 pp.)
- Guidance on implementation and use (PDF) (238 K, 44 pp.)
- Questions and Answers
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
Proposal
- Proposed method published in the Federal Register (January 23, 1996)
- Errata Sheet