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Do you need a mini fridge for vials?
Usually not — a kitchen fridge holds 2–8 °C better than most small ones. The three real reasons to buy one, and how to test any fridge.
Last reviewed · written by PepPrep · not medical advice
Usually not. A vial wants 2–8 °C, out of the light, and not knocked about. A kitchen fridge does that, and it does it better than most mini fridges — the small ones swing further in temperature and some cannot hold 2–8 °C at all. Buy the mini fridge when you have a reason, not as a starting point.
Good reasons to buy one
- Privacy or children. A lockable fridge in a bedroom keeps vials away from small hands and out of the kitchen conversation. This is the most common real reason.
- Your kitchen fridge fails the test. Put a fridge thermometer on the middle shelf for a day. If it reads above 8 °C or drops below 2 °C, fix the fridge or buy a small one that holds.
- No kitchen fridge — a dorm, a workplace, a shared house where the fridge is not yours.
Bad reasons
"Peptide fridge" in a listing is marketing; it is a mini fridge with a different sticker. Thermoelectric coolers (the cheap cube ones) typically hold about 15–20 °C below room temperature, which on a warm day is not 2–8 °C. If you do buy one, buy a compressor model or one that states a thermostat range, and check it with a thermometer for a week before trusting it.
Where in the kitchen fridge
Middle shelf, towards the back but not touching the back wall (that can freeze), in a small case or a clear bin so nothing rolls and nothing else touches it. Not the door: it warms every time the door opens. The fridge guide covers testing and placement in detail; cooling options compares fridges, ice packs and wallets.
Supplies mentioned: Storage & Cold