Analytical Methods - Method 1664, Revision A: N-Hexane Extractable Material (HEM; Oil and Grease) an
Analytical Methods - 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 Extracti ... 1.0 Scope and Application 1.1—This method is for ......