Why Storage Matters
Research peptides are supplied lyophilized — freeze-dried into a dry powder or pellet with the water removed. This is the most stable form, which is why peptides ship lyophilized. The moment a peptide is reconstituted into solution, its sensitivity to temperature, light and time increases sharply. Good storage practice keeps research material consistent batch to batch.
Storage Protocol
Inspect on arrival
Lyophilized peptide should appear as a dry powder or pellet. Inspect the vial and note any damage before use — contact support if anything looks wrong.
Store lyophilized material cold
Keep sealed vials in a freezer for long-term storage, or refrigerated for shorter-term holding. Cold, dry storage is what preserves lyophilized stability.
Protect from light and moisture
Store away from direct light and humidity. Keep vials sealed until reconstitution so the powder does not take up moisture from the air.
Reconstitute only when needed
Add bacteriostatic water slowly down the inside wall of the vial — do not spray it directly onto the pellet. Let it dissolve gently without vigorous shaking.
Refrigerate the reconstituted solution
Once in solution, keep the vial refrigerated. Reconstituted peptide is far more sensitive than lyophilized powder.
Use within the working window
Use reconstituted solutions within a limited window and avoid repeated warming and cooling cycles, which degrade stability.
Temperature Reference
| Lyophilized — long-term | Freezer storage; the most stable holding condition |
|---|---|
| Lyophilized — short-term | Refrigerated; acceptable for near-term use |
| In transit | Brief room-temperature exposure during shipping is normal for lyophilized material |
| Reconstituted solution | Refrigerated at all times; use within a limited window |
| Avoid | Direct light, humidity, and repeated freeze / thaw or warm / cool cycling |
Use the Reconstitution Calculator to compute the concentration and draw volumes for any vial size and bacteriostatic water pairing before you reconstitute.
Lyophilized vs Reconstituted — Key Difference
The single most important storage principle: lyophilized is stable, reconstituted is fragile. Keep peptides lyophilized for as long as possible, and only reconstitute the amount needed for active research. A vial that is reconstituted and then poorly stored loses consistency far faster than one kept freeze-dried.
This guide covers handling of research material only. All peptides are sold strictly for laboratory and in-vitro research — not for human consumption, veterinary use, or any diagnostic or therapeutic application.