for the archive the door swings four or five degrees every time somebody opens it. the back barely moves
i keep everything at the back of the middle shelf, never the door
#storage-coldchain 2025-09-05
Friday30 messages6 participantstimes are UTC
Highlights from this day
- lyophile_liv — light exposure matters much less than temperature for these. i still keep them in the carton 17:07
- lyophile_liv — door shelf or back of the fridge 17:22
- lyophile_liv — a few hours at room temperature is almost certainly nothing. a week is a different conversation 18:04
- slow.taper — the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in, ask me again in a month 19:51
light exposure matters much less than temperature for these. i still keep them in the carton
| 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 |
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*PeptideMeter not the other one
door shelf or back of the fridge
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 6.8power cut with the door shut for a few hours is fine. a full fridge holds temperature surprisingly well
not the freezer
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i log the fridge temperature daily and the room has never let me forget it
power cut for 6 hours, fridge stayed shut, am i fine
a few hours at room temperature is almost certainly nothing. a week is a different conversation
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update from 14 months ago: replaced the fridge, temperature is stable, no more anxiety
a liquid cold pack tells you it was above freezing, not that your vial cooked
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two to eight degrees. most domestic fridge doors are not in that range and people do not check, take that with a pinch of salt
does the amber vial thing matter or is it marketing
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hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct, not advice obviously
nobody here can tell you a vial is safe. we can tell you what has and has not survived for us, from memory
freezing reconstituted peptide is the one thing this channel has never agreed on
i left a reconstituted vial out overnight once, sent it for testing out of curiosity, it came back fine
i keep everything at the back of the middle shelf, never the door
solution is not
lyophilised powder is genuinely robust. a warm transit is far less likely to matter than people fear
buy a thermometer
buy a thermometer. mine reads 6.2 on the door and two degrees lower at the back
unopened and in-use in the same place is fine. just keep the in-use one where you can reach it
for flying, hand luggage every time. the hold is not temperature controlled the way people assume
i would use it
ok so my fridge is running at 5.6, is that out of range
19:40ferrous_ash pinned a message
how cold is too cold, can it actually freeze in a normal fridge
the practical risk in winter shipping is freezing, and in summer it is heat. plan for the season you are in, ask me again in a month
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 6.8Channel stats, last 30 days: 32 messages from 41 members.