the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in
fridge-thermometer.png
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#storage-coldchain 2026-06-16
Tuesday21 messages5 participantstimes are UTC
Highlights from this day
- gip_glp_gil — the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in 17:26
- gip_glp_gil — right so two to eight degrees. most domestic fridge doors are not in that range and people do not check 18:04
- hr_log_hattie — 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 18:53
- osier_orders — update from 19 months ago: replaced the fridge, temperature is stable, no more anxiety i keep everything at the back of the middle shelf, never the door 20:21
- osier_orders — power cut with the door shut for a few hours is fine. a full fridge holds temperature surprisingly well, someone check my working 21:01
how long is reconstituted actually good for at room temperature
what temperature does a domestic fridge door actually swing to
right so two to eight degrees. most domestic fridge doors are not in that range and people do not check
a cooler with two gel packs held under eight degrees for eleven hours on a drive
freezing reconstituted peptide is the one thing this channel has never agreed on
my fridge is 5.6
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
the vial that visibly changed after a warm transit was the one that had already been reconstituted
not the door
🎉1
back of the fridge
i would bin it
nobody here can tell you a vial is safe. we can tell you what has and has not survived for us
the door swings four or five degrees every time somebody opens it. the back barely moves, i think
do you log the fridge temperature or is that too far
gel packs
fridge-thermometer.png
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update from 19 months ago: replaced the fridge, temperature is stable, no more anxiety
i keep everything at the back of the middle shelf, never the door
i log the fridge temperature daily and the room has never let me forget it
power cut with the door shut for a few hours is fine. a full fridge holds temperature surprisingly well, someone check my working
a few hours at room temperature is almost certainly nothing. a week is a different conversation
lyophilised at room temp for 14 days in transit, worried or not