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24/01/2020 5:16 pm
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. |
24/01/2020 6:27 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.
24/01/2020 6:54 pm
Before comparing laboratories, ask whether sample handling, method conditions and reporting definitions are available. Missing details should be visible in the table.
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