power cut with the door shut for a few hours is fine. a full fridge holds temperature surprisingly well
#storage-coldchain 2025-10-18
Saturday16 messages4 participantstimes are UTC
Highlights from this day
- septum_sal — slightly off topic but the door swings four or five degrees every time somebody opens it. the back barely moves 17:39
- shame_and_meds — hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct reconstituted solution is the fragile part. that is where… 18:04
- septum_sal — freezing reconstituted peptide is the one thing this channel has never agreed on 19:40
- electrolyte_eli — a liquid cold pack tells you it was above freezing, not that your vial cooked i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it… 19:44
- electrolyte_eli — light exposure matters much less than temperature for these. i still keep them in the carton, thats one data point freeze thaw cycling is the risk, not one freeze.… 19:45
reconstituted solution is the fragile part. that is where the cold chain actually earns its keep
slightly off topic but the door swings four or five degrees every time somebody opens it. the back barely moves
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 6.8update on the earlier thing i log the fridge temperature daily and the room has never let me forget it
the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in
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unopened and in-use in the same place is fine. just keep the in-use one where you can reach it
hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct
reconstituted solution is the fragile part. that is where the cold chain actually earns its keep
test it
parcel sat in a hot mailbox for 4 hours, is it dead
not the door
while im here how do you keep it cold on a long drive in summer
freezing reconstituted peptide is the one thing this channel has never agreed on
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update on the earlier thing power cut for 9 hours, fridge stayed shut, am i fine
door shelf or back of the fridge
a liquid cold pack tells you it was above freezing, not that your vial cooked
i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it came back fine
light exposure matters much less than temperature for these. i still keep them in the carton, thats one data point
freeze thaw cycling is the risk, not one freeze. that is my read of it anyway