What needs to be clarified
Check the measured characteristic against the supply requirement, distinguish acid and peroxide values, and restore units and comparison grounds without reinterpreting someone else’s measurement as a new quality finding.
Materials to prepare
- Complete laboratory report with method, units and sample identification
- Oil specification stating processing type and required characteristics
- Sealed control samples and sampling record with transfer conditions
What to compare
Match quantity, units, method and applicable criterion for the declared oil. Check transcription, calculation and sample identity. Acid value cannot be converted to peroxide value with a coefficient. Where the required analysis is absent, propose separate control-sample testing, considering storage and changes since initial sampling.
Possible outcome of the analysis
A review may provide a corrected comparison table, identify unsupported original conclusions and justify additional analysis of the required characteristic, stating limitations of retained controls.
Limits of the conclusions
The quantities are not interchangeable even when numbers look similar. Correcting a table does not establish oil safety or when and why its condition changed.