| Silica Gen Treated N-Hexane Extractable Material (Oil and Grease) | Oil and Grease by Solid-Phase, Partition-Gravimetric Method |
| N-Hexane Extractable Material (Oil and Grease) by Extraction and Gravimetry | Oil and Grease - Gravimetric. |
| Oil and Grease by Partition-Gravimetric Method | Oil and Grease - Gravimetric. |
| Oil and Grease by Partition-Gravimetric Method | Oil and Grease - Spectrophotometric, Infrared. |
| Oil and Grease by Partition-Gravimetric Method | Total Recoverable Oil & Grease (Gravimetric, Separatory Funnel Extraction) |
| Oil and Grease by Partition-Gravimetric Method | Total Recoverable Oil & Grease (Gravimetric, Separatory Funnel Extraction) |
| Oil and Grease by Partition-Gravimetric Method | Oil and Grease - Gravimetric. |
| Oil and Grease by Partition-Infrared Method | Total Recoverable Oil & Grease (Gravimetric, Separatory Funnel Extraction) |
| Oil and Grease by Soxhlet Extraction Method | Silica Gen Treated N-Hexane Extractable Material (Oil and Grease) |
| Oil and Grease by Soxhlet Extraction Method | Oil and Grease by Partition-Gravimetric Method |
| Oil and Grease by Extraction Method for Sludge Samples | Oil and Grease by Partition-Gravimetric Method |
| Oil and Grease by Extraction Method for Sludge Samples | Oil and Grease by Partition-Gravimetric Method |
| Oil and Grease by Hydrocarbons | N-Hexane Extractable Material (Oil and Grease) by Extraction and Gravimetry |
| Oil and Grease by Hydrocarbons | Silica Gen Treated N-Hexane Extractable Material (Oil and Grease) |
| Oil and Grease by Solid-Phase, Partition-Gravimetric Method | |