Third-party testing: difference between revisions
Diff·revision 4 → 5·13:40, 25 Jul 2024
Difference between revision 4 and revision 5 of Third-party testing. 4 lines changed; the page grew by 535 bytes.
| Revision 4 — 21:08, 16 Jul 2024 SupplyWatchSuri (talk) split overlong sentence 1,906 bytes ±0 | Revision 5 — 13:40, 25 Jul 2024 Peptide_Pete (talk) correct the description of how lot identifiers are assigned 2,441 bytes +535 | ||
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| 15 | Three separate questions are involved and are routinely collapsed into one. | 15 | Three separate questions are involved and are routinely collapsed into one. |
| 16 | 16 | ||
| + | 17 | # ''Is this sample what it claims to be?'' Answered by identity determination — [[Mass spectrometry|mass confirmation]] against the calculated mass, ideally with sequence-level confirmation. A purity figure alone does not answer it. | |
| + | 18 | # ''How pure is this sample?'' Answered by chromatographic purity, which is an area-normalised figure and not a mass. | |
| + | 19 | # ''How much active substance is in the vial?'' Answered only by [[Peptide content|peptide content]] together with a water determination and a fill mass. Purity does not answer it. | |
| + | 20 | ||
| 17 | == References == | 21 | == References == |
| 18 | {{reflist}} | 22 | {{reflist}} |