| OELCHECK test instrument: | Millipore filter system, scale, desiccator |
| Sample quantity: | 20 ml |
| Unit: | % (weight) |
| Test result: | solid contaminants |
| Analysis for: | hydraulic and gear oils experiencing specific problems, circulating oils |
| Brief description: | The oil sample is diluted with solvent and drawn through a filter with a pore width of 0.8 µm. The difference in filter weight resulting from the "solid contaminants" is converted into % by weight. |
| Statement: | The quantity of "solid contaminants" provides information on the overall pollution of the oil for investigation. The particles on the scaled filter paper can be investigated further using a microscope. Sometimes conclusions can subsequently be drawn on the origin of these residues. |
| Underlying test standard: | OELCHECK test method OPM 080 |
