Janoshik Analytical: difference between revisions
Diff·revision 5 → 6·19:23, 29 Aug 2024
Difference between revision 5 and revision 6 of Janoshik Analytical. 3 lines changed; the page grew by 317 bytes.
| Revision 5 — 00:37, 22 Aug 2024 BlindSampleBrid (talk) split §What a report shows from §What it does not 2,527 bytes +473 | Revision 6 — 19:23, 29 Aug 2024 EndpointEnid (talk) add category for certificates of analysis 2,844 bytes +317 | ||
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| 17 | The value of the released chromatogram is that it converts an assertion into something checkable. An area percent figure of 99.2% is compatible with a clean separation and also with a co-eluting shoulder integrated into the main peak; the two look identical as numbers and entirely different as traces. Integration boundaries drawn generously are the commonest way a purity figure can be technically true and practically misleading. See [[Area percent purity]]. | 17 | The value of the released chromatogram is that it converts an assertion into something checkable. An area percent figure of 99.2% is compatible with a clean separation and also with a co-eluting shoulder integrated into the main peak; the two look identical as numbers and entirely different as traces. Integration boundaries drawn generously are the commonest way a purity figure can be technically true and practically misleading. See [[Area percent purity]]. |
| 18 | 18 | ||
| + | 19 | What a report of this kind does not contain, unless separately commissioned, is a [[Peptide content|peptide content]] determination or a water figure. Without those the mass of active substance in a vial cannot be derived from the purity figure, however clean the trace.{{r|usp1503}} | |
| + | 20 | ||
| 19 | == References == | 21 | == References == |
| 20 | {{reflist}} | 22 | {{reflist}} |
| ⋮ | ⋮ | ||
| 26 | [[Category:Independent testing services]] | 28 | [[Category:Independent testing services]] |
| 27 | [[Category:Testing methodology]] | 29 | [[Category:Testing methodology]] |
| + | 30 | [[Category:Analytical methods]] | |
| 28 | 31 |