Cold chain: difference between revisions
Diff·revision 32 → 33·04:51, 31 Oct 2025
Difference between revision 32 and revision 33 of Cold chain. 4 lines changed; the page grew by 652 bytes.
| Revision 32 — 20:43, 9 Oct 2025 TitrationTheo (talk) add the shelf temperature and the primary drying step to the cycle description 25,931 bytes ±0 | Revision 33 — 04:51, 31 Oct 2025 OralSemaOswin (talk) expand §Distribution outside regulated channels 26,583 bytes +652 | ||
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| 156 | Community-collated reports of material used after warm transit exist, and consistently describe no observed change in effect. As evidence about degradation they are weak in specific, identifiable ways: there is no pre-exposure analytical baseline, no blinding, no measurement of the exposure itself, and the reported endpoint is subjective. Analytical [[Third-party testing|third-party testing]] of a post-transit sample can establish a purity figure, but without a matched pre-transit result it cannot attribute any deficit to transit rather than to manufacture.{{r|ppcold}} | 156 | Community-collated reports of material used after warm transit exist, and consistently describe no observed change in effect. As evidence about degradation they are weak in specific, identifiable ways: there is no pre-exposure analytical baseline, no blinding, no measurement of the exposure itself, and the reported endpoint is subjective. Analytical [[Third-party testing|third-party testing]] of a post-transit sample can establish a purity figure, but without a matched pre-transit result it cannot attribute any deficit to transit rather than to manufacture.{{r|ppcold}} |
| 157 | 157 | ||
| + | 158 | Whether an encyclopedia should describe the practices of this sector at all has been contested on this article's talk page, and the current arrangement — describing what is done and what the evidence for it is worth, without recommending anything — reflects a request for comment closed in 2026.{{r|ppcold}} | |
| + | 159 | ||
| 158 | == Records and regulatory framing == | 160 | == Records and regulatory framing == |
| 159 | In regulated distribution, the cold chain is a documented process, and the governing instruments describe records as much as equipment. | 161 | In regulated distribution, the cold chain is a documented process, and the governing instruments describe records as much as equipment. |
| ⋮ | ⋮ | ||
| 162 | 164 | ||
| 163 | The World Health Organization's model guidance for the storage and transport of time- and temperature-sensitive pharmaceutical products, published as Annex 9 to Technical Report Series 961, performs a similar function internationally and is written to be adoptable by national regulators. It is accompanied by technical supplements addressing individual operations — refrigerated storage, temperature mapping, qualification of shippers, and monitoring — that are the closest thing to a practical manual in the public literature.{{r|whotrs961}} | 165 | The World Health Organization's model guidance for the storage and transport of time- and temperature-sensitive pharmaceutical products, published as Annex 9 to Technical Report Series 961, performs a similar function internationally and is written to be adoptable by national regulators. It is accompanied by technical supplements addressing individual operations — refrigerated storage, temperature mapping, qualification of shippers, and monitoring — that are the closest thing to a practical manual in the public literature.{{r|whotrs961}} |
| + | 166 | ||
| + | 167 | USP <1079> approaches the same ground from the compendial side, describing risks in storage and transport and mitigation strategies, and it is the chapter in which mean kinetic temperature and the treatment of excursions are elaborated for United States practice. USP <1118> covers the monitoring devices themselves.{{r|usp1079,usp1118}} | |
| 164 | 168 | ||
| 165 | == References == | 169 | == References == |