Certificate of analysis: difference between revisions
Diff·revision 13 → 14·11:03, 27 Dec 2024
Difference between revision 13 and revision 14 of Certificate of analysis. 3 lines changed; the page grew by 336 bytes.
| Revision 13 — 22:18, 9 Dec 2024 SecondarySrc_Seb (talk) state the method the reporting service uses, since it is not the only one available 5,697 bytes +212 | Revision 14 — 11:03, 27 Dec 2024 StyleSheetSybil (talk) clarify that a signature on a certificate is a release, not a verification 6,033 bytes +336 | ||
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| 1 | {{Infobox concept | 1 | {{Infobox concept |
| 2 | | name = Certificate of analysis | 2 | | name = Certificate of analysis |
| + | 3 | | subtitle = Quality document | |
| 3 | | image = coa-sheet.svg | 4 | | image = coa-sheet.svg |
| 4 | | caption = A certificate reports what was measured, on what, by what method, and by whom. Fields beyond those four are optional and frequently absent. | 5 | | caption = A certificate reports what was measured, on what, by what method, and by whom. Fields beyond those four are optional and frequently absent. |
| ⋮ | ⋮ | ||
| 40 | * '''Counterion identity and content.''' Trifluoroacetate is the commonest and can account for a large fraction of the mass of a basic peptide. | 41 | * '''Counterion identity and content.''' Trifluoroacetate is the commonest and can account for a large fraction of the mass of a basic peptide. |
| 41 | * '''[[Bacterial endotoxin test|Endotoxin]].''' Reported for a small minority of material; unlike purity, it speaks to the process rather than to the shelf life, because endotoxin does not decrease on storage. | 42 | * '''[[Bacterial endotoxin test|Endotoxin]].''' Reported for a small minority of material; unlike purity, it speaks to the process rather than to the shelf life, because endotoxin does not decrease on storage. |
| + | 43 | ||
| + | 44 | {{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]].}} | |
| 42 | 45 | ||
| 43 | == References == | 46 | == References == |