| OELCHECK test instrument: | Millipore filter system, scale, desiccator |
| Sample quantity: | 10 ml |
| Unit: | mg/kg (weight) |
| Test result: | Solid contaminants |
| Analysis for: | Gear, motor and hydraulic oils, insulating oils, circulation 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 mg/kg by weight. |
| Statement: | The quantity of "solid contaminants" provides information on the overall pollution of the oil for investigation. The particles on the 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 |
