Limit of detection: difference between revisions
Diff·revision 17 → 18·23:53, 16 Sep 2025
Difference between revision 17 and revision 18 of Limit of detection. 2 lines changed; the page grew by 315 bytes.
| Revision 17 — 06:38, 14 Aug 2025 Retention_Time_Rae (talk) add the reference standard and its traceability 4,550 bytes ±0 | Revision 18 — 23:53, 16 Sep 2025 TSH_Tallulah (talk) state the column chemistry and the gradient the figure was obtained on 4,865 bytes +315 | ||
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| 38 | This inverts the naive reading. An itemised related-substances table listing six impurities at 0.05–0.2% is evidence of a sensitive method and a transparent report; a certificate stating "purity 99.9%, no other peaks" may be evidence of a method that cannot see them. | 38 | This inverts the naive reading. An itemised related-substances table listing six impurities at 0.05–0.2% is evidence of a sensitive method and a transparent report; a certificate stating "purity 99.9%, no other peaks" may be evidence of a method that cannot see them. |
| 39 | 39 | ||
| + | 40 | The same logic applies to any determination with a threshold — [[Residual solvent|residual solvents]], [[Bacterial endotoxin test|endotoxin]], water. "Not detected" is meaningful only alongside the level below which detection was impossible, and a report giving one without the other is incomplete.{{r|usp1503}} | |
| + | 41 | ||
| 40 | == References == | 42 | == References == |
| 41 | {{reflist}} | 43 | {{reflist}} |