Certificate of analysis: difference between revisions
Diff·revision 18 → 19·12:34, 7 Mar 2025
Difference between revision 18 and revision 19 of Certificate of analysis. 4 lines changed; the page grew by 576 bytes.
| Revision 18 — 07:14, 20 Feb 2025 ManualOfStyleMo (talk) add the citation for the blind-sampling discussion 6,396 bytes ±0 | Revision 19 — 12:34, 7 Mar 2025 ArchiveBot (talk) bot: add maintenance category 6,972 bytes +576 | ||
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| 48 | {{note|A certificate reporting 99% purity and nothing else is consistent with a vial containing anywhere from roughly two thirds to essentially all of its nominal peptide mass. The purity figure is a ratio among the species that eluted; it is not a fraction of the vial. See [[Area percent purity]].}} | 48 | {{note|A certificate reporting 99% purity and nothing else is consistent with a vial containing anywhere from roughly two thirds to essentially all of its nominal peptide mass. The purity figure is a ratio among the species that eluted; it is not a fraction of the vial. See [[Area percent purity]].}} |
| 49 | 49 | ||
| + | 50 | == Relationship to an independent result == | |
| + | 51 | Where a purchaser obtains an independent determination on material from a lot and compares it with the certificate, agreement between the two establishes something narrow and worth being precise about: two measurements of the same sample agreed. It rules out a certificate written without measurement for that sample. It does not establish that the sample represents the lot, because the sample was chosen by the purchaser rather than drawn under a documented procedure — see [[Blind sampling]].{{r|iso17025}} | |
| + | 52 | ||
| 50 | == References == | 53 | == References == |
| 51 | {{reflist}} | 54 | {{reflist}} |
| ⋮ | ⋮ | ||
| 60 | * [[Blind sampling]] | 63 | * [[Blind sampling]] |
| 61 | * [[Lot traceability]] | 64 | * [[Lot traceability]] |
| + | 65 | * [[Batch number]] | |
| 62 | 66 | ||
| 63 | {{DEFAULTSORT:Certificate of analysis}} | 67 | {{DEFAULTSORT:Certificate of analysis}} |