ice pack — 19 things I got wrong before I got it right
ice pack — 19 things I got wrong before I got it right. It is the sort of thing everyone half-believes and nobody writes down. Once in solution, the relevant risks are hydrolysis, aggregation and, for some sequences, oxidation. Refrigeration slows all three; freezing a solution introduces a separate risk at the ice…
Seasonality, which the source-page lane tables show clearly once you look for it.
The same origin, destination and carrier can differ by several days between February and August, and the temperature exposure differs by much more than the transit time suggests. A lane that is uneventful in winter is the same lane that generates the summer threads.
Two practical consequences. First, compare like months when you compare lanes. Second, ask which lines a supplier holds in regional stock — a shorter leg in July is worth more than any amount of packaging.
write the reconstitution date on the vial
That is a lane problem rather than a packaging problem, and the fixes are different.
a summer lane and a winter lane are different lanes
Agreed on seasonality. The same lane in February and August is not the same lane.
insulation buys hours, not days
the excursion that matters is the one after reconstitution
fridge, not freezer, once it is in solution
That is the ambient temperature at the destination, not the temperature inside the box. The logger measures the second one.