How to Store Lyophilised Research Peptides
Laboratory storage guide for lyophilised research peptides: temperature, light, moisture, freeze–thaw cycles and shelf life.
Peptides are supplied lyophilised (freeze-dried) because the dry powder is far more stable than a solution. Correct storage protects sequence integrity and keeps your results reproducible.
Lyophilised powder
- Long term: −20 °C or below, sealed, in the original vial.
- Short term: 2–8 °C for a few weeks is generally acceptable.
- Light: keep vials in their carton or an opaque container.
- Moisture: allow a cold vial to reach room temperature before opening to prevent condensation.
After reconstitution
Once a peptide is in solution it degrades faster. Keep reconstituted material refrigerated at 2–8 °C, use sterile technique, and avoid repeated freeze–thaw cycles by preparing single-use aliquots where your protocol allows.
Sequences that need extra care
Peptides containing cysteine, methionine or tryptophan are prone to oxidation; those with asparagine or glutamine can deamidate. Refer to the batch COA for any specific handling notes.
Laboratory reagents such as bacteriostatic water and 0.6% acetic acid are available in our reconstitution supplies range.
