Research Guide
Storage & handling.
Temperature, light and air exposure guidelines for lyophilized and reconstituted research peptides. Keeps the compound doing what the COA says it does.
Temperature
Three temperature zones.
Long-term storage
−20°C freezer
Lyophilized peptides remain stable at −20°C for the duration indicated on the COA — typically 24 to 36 months.
Working storage
+2 to +8°C fridge
Reconstituted peptides are held refrigerated for short-term research use. Most peptides are stable for 2 to 4 weeks at this temperature in BAC water.
Short exposure
Room temperature
Acceptable only during active handling — minutes, not hours. Equilibration before reconstitution or aliquoting is a controlled exception.
State Matters
Lyophilized vs reconstituted.
Lyophilized (dry)
Stable and patient
As long as the vial remains sealed and frozen, the compound is stable for the period stated on the COA. Protect from light when possible — amber or opaque outer packaging helps.
Reconstituted (liquid)
Time-limited
Once in solution, the clock starts. Typical shelf life in BAC water at 2 to 8°C: 2 to 4 weeks. Aliquot immediately and freeze sub-samples at −20°C to extend usable life while limiting freeze-thaw cycles.
Enemies of Peptides
What degrades them.
Heat
The single biggest stability risk. Keep peptides cold at every stage of handling. Plan aliquoting before removing from cold storage, not during.
Light (UV)
UV accelerates oxidation of sensitive residues. Store in amber vials or opaque secondary containers; keep out of direct sunlight.
Air (oxidation)
Long exposure to air oxidises methionine, cysteine and tryptophan residues. Minimise open-vial time; re-seal immediately.
Freeze-thaw cycles
Each cycle introduces stress. Aliquot into small single-use volumes so you thaw only what you need and never refreeze the same sample.
Reminder
Research-use positioning.
Storage guidance applies to peptides stored as laboratory research samples. Nothing on this page addresses storage for human, therapeutic or consumer use. See Research-Use Disclaimer.