update on the earlier thing if you are worried after a bad transit, test it. that is what the testing channels are for
#storage-coldchain 2026-04-11
Saturday31 messages6 participantstimes are UTC
Highlights from this day
- cagri_curious — hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct 16:02
- cagri_curious — do you keep the unopened vials and the in-use one in the same place the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season… 16:26
- acetate_ash — the door swings four or five degrees every time somebody opens it. the back barely moves, someone check my working 17:20
- tam_logs — reconstituted solution is the fragile part. that is where the cold chain actually earns its keep 17:23
a few hours at room temperature is almost certainly nothing. a week is a different conversation, for what its worth
log it
two to eight
unrelated but i log the fridge temperature daily and the room has never let me forget it
hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct
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slightly off topic but flying with vials, hand luggage or checked
do you keep the unopened vials and the in-use one in the same place
the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in
*PeptideMeter not the other one
lyophilised powder is genuinely robust. a warm transit is far less likely to matter than people fear, take that with a pinch of salt
for flying, hand luggage every time. the hold is not temperature controlled the way people assume
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coming back to this freeze thaw cycling is the risk, not one freeze. that is my read of it anyway
i have never had a lyophilised vial fail after a warm transit and i have had some bad ones
i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why
[edited]i keep everything at the back of the middle shelf, never the door
power cut with the door shut for a few hours is fine. a full fridge holds temperature surprisingly well
the door swings four or five degrees every time somebody opens it. the back barely moves, someone check my working
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reconstituted solution is the fragile part. that is where the cold chain actually earns its keep
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how do you keep it cold on a long drive in summer
the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in
i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it came back fine
not the door
nobody here can tell you a vial is safe. we can tell you what has and has not survived for us
does the fridge in a hotel room count as a fridge
lyophilised at room temp for 12 days in transit, worried or not
i left it out overnight by accident, bin it or use it
the vial that visibly changed after a warm transit was the one that had already been reconstituted
parcel sat in a hot mailbox for 3 hours, is it dead
cagri_curiousdo you keep the unopened vials and the in-use one in the same place the practical risk…
freezing reconstituted peptide is the one thing this channel has never agreed on
anyone had a vial visibly change after a warm transit
best travel setup for 12 days away with vials
right so buy a thermometer. mine reads 5.6 on the door and two degrees lower at the back