Cold chain: difference between revisions
Diff·revision 31 → 32·11:43, 15 Nov 2024
Difference between revision 31 and revision 32 of Cold chain. 10 lines changed; the page grew by 790 bytes.
| Revision 31 — 08:51, 9 Nov 2024 LCellLeif (talk) link to the policy rather than restating it 13,418 bytes +289 | Revision 32 — 11:43, 15 Nov 2024 StubSorterBot (talk) bot: repair redlinked category 14,208 bytes +790 | ||
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| 14 | | Controlled room temperature = 20–25 °C; mean kinetic temperature not above 25 °C | 14 | | Controlled room temperature = 20–25 °C; mean kinetic temperature not above 25 °C |
| 15 | | Warm = 30–40 °C | 15 | | Warm = 30–40 °C |
| + | 16 | <!-- Monitoring --> | |
| + | 17 | | Conventional logger accuracy expectation = ±0.5 °C across 2–8 °C | |
| + | 18 | | Typical logging interval = 1–15 minutes | |
| + | 19 | | Summary statistic for cumulative exposure = Mean kinetic temperature | |
| + | 20 | | Package qualification test methods = ISTA 7D; ASTM D3103 | |
| 16 | }} | 21 | }} |
| 17 | {{hatnote|For departures from the conditions described here, see [[Temperature excursion]]. For the freight arrangements themselves, see [[Cold-chain freight]].}} | 22 | {{hatnote|For departures from the conditions described here, see [[Temperature excursion]]. For the freight arrangements themselves, see [[Cold-chain freight]].}} |
| ⋮ | ⋮ | ||
| 86 | 91 | ||
| 87 | A worked case shows why the statistic is used. Consider a warehouse that spends 12 hours of each day at 2 °C and 12 hours at 30 °C — an unrealistically extreme cycle, chosen to make the arithmetic legible. The arithmetic mean is 16.0 °C. Converting to kelvin, 275.15 K and 303.15 K: | 92 | A worked case shows why the statistic is used. Consider a warehouse that spends 12 hours of each day at 2 °C and 12 hours at 30 °C — an unrealistically extreme cycle, chosen to make the arithmetic legible. The arithmetic mean is 16.0 °C. Converting to kelvin, 275.15 K and 303.15 K: |
| + | 93 | ||
| + | 94 | == Packaging and qualification == | |
| + | 95 | Between controlled environments, the product travels inside a package that must maintain its internal temperature without external power. The performance of such a passive shipper is a designed property, qualified against defined ambient profiles, and it is specific to a payload. | |
| + | 96 | ||
| + | 97 | The components are an insulating shell, a coolant, and a payload space arranged so that the coolant neither contacts the product directly nor is separated from it by so much air that it cannot influence it. | |
| 88 | 98 | ||
| 89 | == References == | 99 | == References == |