freezing reconstituted peptide is the one thing this channel has never agreed on, for what its worth
#storage-coldchain 2025-11-09
Sunday11 messages5 participantstimes are UTC
Highlights from this day
Recon calculator: 30mg in 0.5ml = 4mg/ml.
👍15
a liquid cold pack tells you it was above freezing, not that your vial cooked
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 6.8coming back after 12 months, is the pinned storage table still current
thats fine
if you are worried after a bad transit, test it. that is what the testing channels are for
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reconstituted solution is the fragile part. that is where the cold chain actually earns its keep, not advice obviously
solution is not
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quick one two to eight degrees. most domestic fridge doors are not in that range and people do not check
| Condition | Lyophilised | Reconstituted |
|---|---|---|
| 2-8 °C | fine, long term | fine, weeks |
| Room temp, days | fine in every report here | reported fine, shorter |
| Room temp, weeks | reported fine | do not |
| Warm transit, 30 °C+ | no failure logged | one visible degradant peak |
| Frozen once | fine | contested, no consensus |
| Freeze-thaw cycled | fine | the room says no |
cold pack arrived completely liquid, does that mean anything
✅12
back of the fridge