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