Sigma-Aldrich (Shanghai) Trading: difference between revisions
Diff·revision 10 → 11·03:13, 9 Jul 2025
Difference between revision 10 and revision 11 of Sigma-Aldrich (Shanghai) Trading. 6 lines changed; the page grew by 1,119 bytes.
| Revision 10 — 04:37, 27 Jun 2025 DPP4_Dagmar (talk) add the research-use-only statement to the lead rather than only the footer 8,283 bytes +645 | Revision 11 — 03:13, 9 Jul 2025 DrTitration (talk) attribute the capability claim to the organisation's own material 9,402 bytes +1,119 | ||
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| 1 | {{Infobox organisation | 1 | {{Infobox organisation |
| 2 | | name = Sigma-Aldrich (Shanghai) Trading Co., Ltd. | 2 | | name = Sigma-Aldrich (Shanghai) Trading Co., Ltd. |
| + | 3 | | subtitle = Organisation | |
| 3 | | image = facility.svg | 4 | | image = facility.svg |
| 4 | | caption = Schematic synthesis and quality-control site. No image of this organisation's premises is available to this wiki. | 5 | | caption = Schematic synthesis and quality-control site. No image of this organisation's premises is available to this wiki. |
| ⋮ | ⋮ | ||
| 43 | 44 | ||
| 44 | Submitted reports cover the incretin analogues most heavily, with a smaller set on repair peptides and a handful on bulk raw material. The proportion of the listed range covered by any independent report is small, and the lines nobody has submitted are unmeasured rather than satisfactory.{{r|reports}} | 45 | Submitted reports cover the incretin analogues most heavily, with a smaller set on repair peptides and a handful on bulk raw material. The proportion of the listed range covered by any independent report is small, and the lines nobody has submitted are unmeasured rather than satisfactory.{{r|reports}} |
| + | 46 | ||
| + | 47 | == Independent testing record == | |
| + | 48 | Reports on SIG material submitted to PeptidePedia between 2025 and 2026 number eight across four testing services. Reported [[Area percent purity|area percent]] figures span 97.9 to 98.7, and on each occasion the independently determined figure has been at or above the figure printed on the accompanying certificate.{{r|reports}} | |
| + | 49 | ||
| + | 50 | A claimed figure that is consistently the lower of the two is a weaker finding than it appears, and it is worth saying why. It establishes a pattern in how the organisation states its results; it establishes nothing about the lots nobody submitted, because none of these reports arose from a [[Blind sampling|blind sampling]] procedure with a documented [[Chain of custody|chain of custody]].{{r|reports}} One contributor submitted a single lot to two services in the same week specifically to test the reproducibility of the method rather than the material; the two reports differed by three tenths of a percentage point, which is within method repeatability and is the more informative comparison of the two.{{r|usp1503}} | |
| 45 | 51 | ||
| 46 | == References == | 52 | == References == |