Oil and Grease
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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
- Fact sheet (February 1999)
- Federal Register Notice, 64 FR 26315 (PDF) (13 pp, 275K) (May 14, 1999)
- Print Version (PDF) (28 pp, 213K; EPA-821-R-98-002) (February 1999)
- Modifications to Method 1664A (2009)
- Final Decision on Alternative Oil and Grease Method (ASTM D7575) (March 6, 2013)
Note: EPA no longer updates this information, but it may be useful as a reference or resource.