How to store peptides
What a vial needs from the place you keep it: cold, upright, labeled, separated and dark. A guide about containers, not contents.
Updated 21 October 2026

We sell the box. We do not sell what goes in it, and we are not the people to ask what belongs in it. Whatever you own came with storage instructions from whoever supplied it, and those instructions win over anything on this page. What follows is about the container: what a glass vial needs from the place you keep it, and what goes wrong when it does not get it.
Cold is the instruction you already have
Your supplier's label gives you a storage range. Our job is to make that range easier to hold: a case keeps vials together so you open the fridge once instead of five times, and a cooler keeps them cold when there is no fridge to open.
No case on this site cools anything by itself. A fridge case is organization, not refrigeration. When cold has to travel with the vials, it comes from something you freeze or something you plug in: the Ring's freeze ring, the gel stick that comes with Crate 10, or the Silo's power. Each page says what it is rated for and who rated it, or that it has not been rated yet.
Upright, always
A vial stored on its side leaves liquid sitting against the rubber stopper, which is made to be pierced from above, not to sit in liquid. Standing the vial up also keeps the label readable without turning anything over, and means a slow leak past a crimp shows up on the outside of the glass instead of hiding under it.
Every case we sell holds vials upright in a cut foam slot. That is most of what the foam is for. The rest is keeping glass from touching glass.
Label it before you put it away
The most common thing that goes wrong in a fridge is not temperature. It is losing track of which vial is which and when it was opened.
- Write on the vial or the cap, not on a sticky note on the shelf.
- Date it the day you open it, not the day you bought it.
- If two vials look the same, make them not look the same.
A case helps here too: a vial that always goes back in the same slot is a vial you can find without reading every label.
Glass against glass is how vials break
Loose vials in a drawer knock together every time the drawer moves, and a hairline crack in a vial is not something you will see. Foam slots stop that. So does a case that closes, which also stops a vial rolling to the back of a shelf and staying there for a month.
Every case page has a slot map drawn from the case's interior dimensions, so you can see what fits before you buy. Anything we have not measured yet is drawn as a dashed outline rather than guessed.
Which Crate
Count the vials you keep in the fridge at one time, then add one for the vial you have not finished. Crate 10 is the larger of the two; Crate 8 is for a smaller shelf.
Each case page's slot map shows which vial sizes each slot takes, and marks anything we have not confirmed yet.
The fridge door is the worst shelf in the fridge
The door swings into a warm room several times a day, and the things stored in it swing with it. A shelf at the back, low down, moves least. That is where a case of vials should sit.
A domestic fridge is also not a precision instrument. If you care about the number, put a small thermometer on the shelf and read it for a week before you trust it.
Keep the light off them
Direct light is not the main concern indoors, but it costs nothing to avoid. A closed zip case keeps vials in the dark between uses, including every time the fridge door opens and the light comes on.
Going out with them
That is a different problem, and the answer depends entirely on how long you will be away from a fridge: an hour is not a day and a day is not a flight. Keeping vials cold away from a fridge works through it.
What this guide will not tell you
We do not publish anything on preparing, dosing or using what you store, or on how long any substance stays good under any condition. Not because it is secret, but because we sell containers and have no business answering it. Ask whoever supplied or prescribed what you have.