two to eight degrees. most domestic fridge doors are not in that range and people do not check
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#storage-coldchain 2026-05-26
Tuesday35 messages7 participantstimes are UTC
Highlights from this day
- ferrous_ash — two to eight degrees. most domestic fridge doors are not in that range and people do not check 12:27
- salt_bridge — the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in 12:36
- ferrous_ash — parcel sat in a hot mailbox for 8 hours, is it dead 13:02
- rae_labels — a cooler with two gel packs held under eight degrees for eleven hours on a drive, n of 1 obviously 13:52
solution is not
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the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in
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 6.8❤️12😂7
i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it came back fine
my fridge is 7.4
light exposure matters much less than temperature for these. i still keep them in the carton
parcel sat in a hot mailbox for 8 hours, is it dead
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hand luggage
[edited]Archive lookup: rae_labels first appears in this channel on 2025-08-27.
my fridge is running at 7.4, is that out of range
two to eight
update from 9 months ago: replaced the fridge, temperature is stable, no more anxiety, i think
13:42ferrous_ash pinned a message to this channel
power cut for 5 hours, fridge stayed shut, am i fine
for the archive i left it out overnight by accident, bin it or use it
a cooler with two gel packs held under eight degrees for eleven hours on a drive, n of 1 obviously
transit-times.csv
739 rows · not retained in the public archive
while im here anyone tested a vial before and after a bad transit
unopened and in-use in the same place is fine. just keep the in-use one where you can reach it
back of the fridge
*Medutest not the other one
sorry to jump in reconstituted solution is the fragile part. that is where the cold chain actually earns its keep
do you keep the unopened vials and the in-use one in the same place
coming back after 3 months, is the pinned storage table still current
does the amber vial thing matter or is it marketing
i would bin it
[edited]for the archive flying with vials, hand luggage or checked
freeze thaw cycling is the risk, not one freeze. that is my read of it anyway
buy a thermometer. mine reads 5.6 on the door and two degrees lower at the back
is there a difference in stability between the compounds
follow up i have never had a lyophilised vial fail after a warm transit and i have had some bad ones
i keep everything at the back of the middle shelf, never the door
follow up how cold is too cold, can it actually freeze in a normal fridge
gel packs
lyophilised at room temp for 25 days in transit, worried or not
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