gel packs
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#storage-coldchain 2025-10-12
Sunday41 messages9 participantstimes are UTC
Highlights from this day
- fridge_thermo — follow up a few hours at room temperature is almost certainly nothing. a week is a different conversation 09:20
- VialBot — Testing queue: 5 submissions open, 60 awaiting dispatch. 10:06
- auckland_aliquot — do you log the fridge temperature or is that too far 10:46
- see_a_clinician — i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why 12:37
nobody here can tell you a vial is safe. we can tell you what has and has not survived for us
update from 24 months ago: replaced the fridge, temperature is stable, no more anxiety
ok so reconstituted solution is the fragile part. that is where the cold chain actually earns its keep
[edited]the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in
powder is robust
not the door
i would use it
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buy a thermometer. mine reads 5.6 on the door and two degrees lower at the back
follow up a few hours at room temperature is almost certainly nothing. a week is a different conversation
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i would bin it
sorry to jump in does the fridge in a hotel room count as a fridge
best travel setup for 8 days away with vials
hand luggage
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solution is not
for the archive two to eight degrees. most domestic fridge doors are not in that range and people do not check
Testing queue: 5 submissions open, 60 awaiting dispatch.
the door swings four or five degrees every time somebody opens it. the back barely moves
sorry to jump in hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct
hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct
do i need to worry about light exposure or is that overthinking
do you keep the unopened vials and the in-use one in the same place
*Janoshik not the other one
a cooler with two gel packs held under eight degrees for eleven hours on a drive, i could be wrong
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do you log the fridge temperature or is that too far
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back of the fridge
i have never had a lyophilised vial fail after a warm transit and i have had some bad ones
parcel sat in a hot mailbox for 9 hours, is it dead
flying with vials, hand luggage or checked
freezing reconstituted peptide is the one thing this channel has never agreed on
what temperature does a domestic fridge door actually swing to
my fridge is 4
does the amber vial thing matter or is it marketing
i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it came back fine
i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why
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i keep everything at the back of the middle shelf, never the door
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for the archive power cut with the door shut for a few hours is fine. a full fridge holds temperature surprisingly well
unopened and in-use in the same place is fine. just keep the in-use one where you can reach it
quick one anyone had a vial visibly change after a warm transit
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is a five pound fridge thermometer actually worth it
freeze thaw cycling is the risk, not one freeze. that is my read of it anyway