Storage basics for lyophilized research peptides
General laboratory guidance on temperature, light and moisture for keeping lyophilized research peptides as close as possible to their tested state.
ALORA Research editorial teamPublished Last reviewed 1 min read
The short answer
Lyophilized research peptides are commonly kept frozen, typically at −20 °C, sealed, dry and away from light. Avoid repeated warming and cooling, and let a cold vial reach room temperature before opening it so moisture does not condense on the powder. Always follow the conditions on the lot record and your laboratory's SOPs.
A lyophilized (freeze-dried) peptide is supplied as a dry powder because it is far more stable that way than in solution. The goal of storage is simple: keep the material as close as possible to the state it was in when it was tested.
Temperature
Lyophilized peptides are commonly stored frozen, typically at −20 °C, for long-term keeping. Avoid repeated warming and cooling — moving a vial in and out of the freezer is harder on the material than steady cold storage.
Light and moisture
Keep vials sealed, dry and away from direct light. Moisture is the main enemy of a lyophilized powder, so let a cold vial reach room temperature before opening it; opening it cold draws condensation onto the powder.
Material in solution
A peptide in solution is much less stable than the dry powder. Storage conditions for material in solution depend on the compound and the experiment, and are set by your laboratory's own SOPs.
Follow the specific guidance
This is general guidance for research peptides. Always follow the storage conditions listed on each product page and lot record, and your own laboratory's SOPs, which take precedence.
