gel packs
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#storage-coldchain 2025-04-21
Monday21 messages6 participantstimes are UTC
Highlights from this day
- travel_cooler — update from 5 months ago: replaced the fridge, temperature is stable, no more anxiety 13:58
- deadspace — i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why a liquid cold pack tells you it was above freezing, not… 14:27
- plus_sixteen — how long is reconstituted actually good for at room temperature a liquid cold pack tells you it was above freezing, not that your vial cooked 15:28
the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in
best travel setup for 24 days away with vials
cold pack arrived completely liquid, does that mean anything
update from 5 months ago: replaced the fridge, temperature is stable, no more anxiety
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i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why
a liquid cold pack tells you it was above freezing, not that your vial cooked
anyone had a vial visibly change after a warm transit
i have never had a lyophilised vial fail after a warm transit and i have had some bad ones
lyophilised powder is genuinely robust. a warm transit is far less likely to matter than people fear
how long is reconstituted actually good for at room temperature
a liquid cold pack tells you it was above freezing, not that your vial cooked
solution is not
for flying, hand luggage every time. the hold is not temperature controlled the way people assume, i have it written down somewhere
thats fine
freeze thaw cycling is the risk, not one freeze. that is my read of it anyway
is there a difference in stability between the compounds
what temperature does a domestic fridge door actually swing to
parcel sat in a hot mailbox for 6 hours, is it dead
for the archive reconstituted solution is the fragile part. that is where the cold chain actually earns its keep
coming back to this do i need to worry about light exposure or is that overthinking
not the door
buy a thermometer. mine reads 6.2 on the door and two degrees lower at the back, thats just me