| OELCHECK test instrument: | Mettler-Toledo pH/Ion bench meter SC S220-B |
| Sample quantity: | 25 ml |
| Unit: | none |
| Test result: | pH value |
| Result range: | 0-14 |
| Analysis for: | coolants |
| Brief description: | The pH value indicates the basic or acid character of a solution or rather is a measure for the strength of a basic or acid effect of a solution. It is divided as follows: |
| Statement: | The pH value is a fundamental value for aqueous medias. For coolants, it is essential for the corrosion tendency. The higher the pH value the more likely a coolant attacks an aluminum component. Since different degradation products lower the pH value of a coolant, a decreasing value also indicates the end of a coolant's operating time. |
| Underlying test standard: | ASTM D1287 |
