vialroom

#storage-coldchain 2026-05-21

Thursday24 messages7 participantstimes are UTC
Highlights from this day
  • fridge_thermo — how cold is too cold, can it actually freeze in a normal fridge 22:11
  • evidence_or_not — ok so update from 21 months ago: replaced the fridge, temperature is stable, no more anxiety 22:15
  • reta_resting_hr — right so i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why, ymmv i left a reconstituted vial out overnight… 22:22
  • rezept_rolf — cold pack arrived completely liquid, does that mean anything 22:52
  • ghent_gradient — coming back to this the door swings four or five degrees every time somebody opens it. the back barely moves, anyway 23:16
EO

sorry to jump in freeze thaw cycling is the risk, not one freeze. that is my read of it anyway
freezing reconstituted peptide is the one thing this channel has never agreed on

ok so update from 21 months ago: replaced the fridge, temperature is stable, no more anxiety

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freezing reconstituted peptide is the one thing this channel has never agreed on

RR

right so i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why, ymmv
i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it came back fine

is a five pound fridge thermometer actually worth it

ok so the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in

RR

a cooler with two gel packs held under eight degrees for eleven hours on a drive

RR

genuine question i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it came back fine

gel packs

RR

cold pack arrived completely liquid, does that mean anything

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RR

light exposure matters much less than temperature for these. i still keep them in the carton

coming back to this the door swings four or five degrees every time somebody opens it. the back barely moves, anyway

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for the archive two to eight degrees. most domestic fridge doors are not in that range and people do not check

FT

for flying, hand luggage every time. the hold is not temperature controlled the way people assume

test it

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