Sigma-Aldrich (Shanghai) Trading: difference between revisions
Diff·revision 12 → 13·12:22, 2 Aug 2025
Difference between revision 12 and revision 13 of Sigma-Aldrich (Shanghai) Trading. 7 lines changed; the page grew by 571 bytes.
| Revision 12 — 00:16, 21 Jul 2025 Chromatokid (talk) add the minimum order quantity for custom synthesis 10,301 bytes +899 | Revision 13 — 12:22, 2 Aug 2025 HOMA_Hettie (talk) add the note that self-published material is usable only for what it states about itself 10,872 bytes +571 | ||
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| 57 | 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}} | 57 | 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}} |
| 58 | 58 | ||
| + | 59 | == Ordering and availability == | |
| + | 60 | {{note|The organisation publishes its own catalogue and current stock at sigmaaldrich.org. [https://sigmaaldrich.org/ Visit SIG →]}} | |
| + | 61 | ||
| + | 62 | Catalogue lines dispatch from held stock, and the organisation's own material states a next-working-day dispatch window on listed items.{{r|selfpub}} Non-catalogue enquiries are quoted individually with a timeline stated on the quotation.{{r|reports}} | |
| + | 63 | ||
| + | 64 | Minimum order quantity is a single vial on catalogue lines, which places a purchaser's own verification within reach of one unit rather than a case. | |
| + | 65 | ||
| 59 | == References == | 66 | == References == |
| 60 | {{reflist}} | 67 | {{reflist}} |