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26/11/2022 10:38 am
A comparison table places chromatographic purity and net peptide content in one column. Both are percentages, but the reports define their denominators differently. How should the table be repaired?
| Field | Scope |
|---|---|
| Subject | Two laboratories, two percentages: are they measuring the same thing? |
| Exercise | Discuss the stated question; distinguish sources, interpretations and unresolved points. |
26/11/2022 12:14 pm
Create separate columns for the quantity measured, method, units and denominator. Do not subtract the two percentages as though they represented a disagreement about the same measurement.
26/11/2022 12:28 pm
Before comparing laboratories, ask whether sample handling, method conditions and reporting definitions are available. Missing details should be visible in the table.
26/11/2022 12:44 pm
Keep the original reported values beside any reformatted presentation. A conversion or interpretation needs a documented basis; it should not silently replace the source.
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