Research-use scope. This page describes storage of sealed containers and the associated records. It is not for use in people or animals and contains no procedural guidance on opening, preparing, or using material. Storage decisions belong to the receiving laboratory's own validated procedures.
What "lyophilized" means for storage
Lyophilization (freeze-drying) removes water from a material under vacuum at low temperature, leaving a dry solid in a sealed vial. In that dry, sealed state, most peptide research materials are far more stable than they would be in solution, which is why they are supplied this way. The things that shorten that stability are the things that reintroduce water, heat, or light: a compromised seal, humid air, repeated warming and cooling, and direct light exposure.
Storage conditions commonly specified
| Factor | Common specification for sealed lyophilized material | Why it matters |
|---|---|---|
| Temperature | Refrigerated (2 to 8 °C) for shorter periods; frozen (around −20 °C) for longer-term storage, per the receiving laboratory's procedure. | Lower temperature slows chemical change in the dry solid. |
| Temperature cycling | Avoid repeated transitions between frozen and ambient conditions. | Each cycle can condense moisture on and around the container. |
| Light | Store in the dark or in an opaque container. | Some peptides are sensitive to light-driven degradation. |
| Moisture | Keep vials sealed until use and, where practical, in a desiccated container. | Water is the main driver of degradation for a freeze-dried solid. |
| Container integrity | Inspect the seal and stopper at receipt and before storage. | A compromised seal means the "dry, sealed" assumptions no longer hold. |
These are general conditions frequently cited for this class of material. They are not a guarantee of stability for any specific lot, and they do not override a receiving laboratory's own stability data or standard operating procedures.
Receiving and storage records
- On arrival, record the date, the material name, the labeled strength, the lot identifier, and the condition of each seal.
- Note the storage location and the temperature the location is controlled to.
- Match the lot to its published analytical record in the batch COA library and file the certificate number with the receiving entry.
- Log any excursion: a delivery left at ambient temperature, a freezer failure, a broken seal. The excursion is part of the lot's history.
Shipping and receipt. Arctic Lab Supply ships sealed vials from the U.S. with tracking, and shipping details are published on the shipping page. What happens to a vial after delivery, including where and how it is stored, is under the receiving laboratory's control and should be documented there.
Organizing vials in a refrigerator
- Store vials upright on a shelf, not in the door. The door is the warmest part of a refrigerator and swings the most in temperature each time it opens.
- Keep every label and lot identifier readable without picking vials up. A raised back row helps when 3 mL and 10 mL vials share a shelf.
- Group vials by lot, so a container that has to be set aside is easy to find along with its records.
- Mark caps or positions so the vial in use is easy to tell apart from sealed stock.
Labeling. Arctic Lab Supply prints snap-on vial caps in Anchorage, Alaska. They fit 3 mL and 10 mL vials and can carry a printed label for telling vials apart. See Arctic Gear.
When to set material aside
- The seal or stopper is damaged, or the vial shows visible moisture inside.
- The lot identifier on the vial does not match any received record.
- The container experienced an undocumented temperature excursion.
- The material's appearance differs markedly from other vials of the same lot.
Each of these is a reason to quarantine the container and record the observation, not a diagnosis. Disposition is the receiving laboratory's decision under its own procedures.
Related documentation
Lot traceabilityHow a labeled vial is matched to its record.Published COA libraryEvery currently published report, with verification links.Shipping and handling policyHow sealed vials are packed and shipped.Research standardsThe site's research-use and documentation boundaries.Research materials catalogCurrent listings with batch-documentation status and availability.BPC-157 5mgLyophilized research material with a published batch record.GHK-Cu 50mgLyophilized research material with a published batch record.