is a five pound fridge thermometer actually worth it
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#storage-coldchain 2026-01-18
Sunday50 messages10 participantstimes are UTC
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i keep everything at the back of the middle shelf, never the door
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update from 18 months ago: replaced the fridge, temperature is stable, no more anxiety
i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it came back fine
nobody here can tell you a vial is safe. we can tell you what has and has not survived for us
a liquid cold pack tells you it was above freezing, not that your vial cooked, happy to be corrected
New independent result logged — FGP, lot B-0329, purity 99% (Janoshik).
how long is reconstituted actually good for at room temperature
lyophilised powder is genuinely robust. a warm transit is far less likely to matter than people fear
i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why
buy a thermometer. mine reads 6.2 on the door and two degrees lower at the back
i would use it
unopened and in-use in the same place is fine. just keep the in-use one where you can reach it
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the door swings four or five degrees every time somebody opens it. the back barely moves, for what its worth
what temperature does a domestic fridge door actually swing to
hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct, from memory
sorry to jump in the vial that visibly changed after a warm transit was the one that had already been reconstituted, take that with a pinch of salt
*that should say weekly
does anyone freeze reconstituted vials or is that madness
freeze thaw cycling is the risk, not one freeze. that is my read of it anyway
coming back after 18 months, is the pinned storage table still current
gel packs
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do i need to worry about light exposure or is that overthinking
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sorry to jump in i left it out overnight by accident, bin it or use it
buy a thermometer
[edited]how do you keep it cold on a long drive in summer
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if you are worried after a bad transit, test it. that is what the testing channels are for
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power cut for 5 hours, fridge stayed shut, am i fine
cold pack arrived completely liquid, does that mean anything
my fridge is 4.8
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hand luggage
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solution is not, from memory
freeze debate again
a cooler with two gel packs held under eight degrees for eleven hours on a drive
i have never had a lyophilised vial fail after a warm transit and i have had some bad ones
powder is robust
for flying, hand luggage every time. the hold is not temperature controlled the way people assume, n of 1 obviously
my fridge is running at 4, is that out of range
powder is robust
flying with vials, hand luggage or checked
freezing reconstituted peptide is the one thing this channel has never agreed on
mon 4.1 / door 7.2
tue 4.0 / door 7.8
wed 4.2 / door 6.9
thu 3.9 / door 7.4
fri 4.1 / door 8.1 <- shopping day
sat 4.3 / door 7.0
sun 4.0 / door 6.8test it
anyone tested a vial before and after a bad transit
right so the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in
not the door
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right so power cut with the door shut for a few hours is fine. a full fridge holds temperature surprisingly well
thats fine
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does the amber vial thing matter or is it marketing
the door swings four or five degrees every time somebody opens it. the back barely moves