Key takeaways
- Hold lyophilized vials cold, dark and dry; −20 °C or colder for long holding periods.
- Keep vials in a sealed secondary container with indicating desiccant, and log the date it was replaced.
- On arrival, check cold-chain packaging, desiccant presence and that the vial lot matches the certificate of analysis.
- Log product, quantity, lot number, storage coordinate, set temperature and every access event.
- Separate and label concurrent lots, since purity and test method are stated per lot.
Where lyophilized vials belong
Lyophilized peptide vials are held cold, dark and dry. For long holding periods a laboratory freezer at −20 °C or colder is the common choice; short holding periods of days to weeks are generally kept at 2–8 °C in a sealed container with desiccant.
Two variables matter most: moisture and temperature cycling. Lyophilized powder is hygroscopic, so an unsealed vial in humid room air takes up water. Repeated warming and cooling adds condensation risk each time the container is opened.
Our vials ship in cold-chain packaging with desiccant, and each lot carries a downloadable certificate of analysis stating identity, purity and test method. For laboratory research use only. Not for human or veterinary use.
Receiving a shipment from Vancouver
Shipments leave Vancouver with tracked courier service. The receiving step is short and worth doing the same way every time.
- Record the date and time of arrival against the tracking number.
- Open the outer carton and note whether the cold-chain packaging is intact and whether the desiccant sachet is present.
- Inspect each vial for cracks, a dislodged stopper, or powder adhering to the stopper rather than the vial base.
- Confirm that the lot number on the vial label matches the lot number on the certificate of analysis.
- Move the vials to their assigned freezer or fridge position and write that position in the log.
Powder that has shifted during transit is a cosmetic observation, not an identity question. Identity and purity are addressed by the certificate of analysis for the lot, which for products such as Epitalon Tetrapeptide, 10 mg Lyophilized Vial states ≥99% purity by HPLC.
Desiccant and container practice
Keep vials inside a secondary sealed container with fresh desiccant rather than loose on a freezer shelf. The container buffers humidity when the freezer door opens and keeps labels legible.
- Use indicating desiccant where possible, and replace sachets when the indicator colour changes.
- Do not store desiccant loose against the vial labels; adhesive labels can lift.
- Label the secondary container with contents and the date the desiccant was last replaced.
- Allow a sealed container to reach room temperature before opening it, so condensation forms on the container rather than the vials.
Light, position and freezer mapping
Store vials in the dark. The original carton, an opaque box, or a cryobox all serve. Assign a fixed coordinate — freezer, shelf, rack, box, position — and use it consistently so retrieval takes seconds rather than minutes with the door open.
Keep peptide inventory away from the freezer door and away from any auto-defrost compartment. Frost-free units cycle temperature by design, which is the condition lyophilized powder tolerates least well.
Where aliquoting into separate containers is part of a protocol, a sterile receiving vessel keeps the record clean. Our Sterile 10 mL Borosilicate Vials with Butyl Stoppers, Box of 10 come sterile with butyl stoppers and crimp seals, ten per box, at $24.99 CAD, and are sold for laboratory use only.
What to record in the lab log
A storage log answers one question later: which lot was held where, at what temperature, and for how long. Keep the fields short and fill them at the moment of handling.
| Field | Example entry |
|---|---|
| Product and quantity | Thymosin, 10 mg per vial |
| Lot number | as printed on the vial label |
| Certificate of analysis | PDF filed; ≥99% by HPLC |
| Date received | date and initials of receiver |
| Packaging condition | cold-chain intact, desiccant present |
| Storage location | Freezer 2, shelf B, box 4, position A3 |
| Set temperature | −20 °C |
| Desiccant replaced | date |
| Access events | date, initials, reason |
Two habits make the log useful. Record temperature excursions with duration, not just the fact that one happened. And file the certificate of analysis alongside the log entry, named by lot number, so the identity record and the storage record sit together.
Traceability across multiple lots
Laboratories that order the same peptide more than once end up holding two lots at the same time. Keep them physically separated and labelled by lot, because purity and test method are stated per lot, not per product line.
When a lot is exhausted, close the log entry with the date and keep the certificate of analysis on file. That closed record is what supports later questions about which material was in use during a given experiment. The Thymosin Peptide, 10 mg Lyophilized Vial at $79.99 CAD, like every item in our Research Peptides range, ships with a certificate of analysis for its lot stating identity, purity and test method.
Ordering consumables with the peptides
Storage practice depends on having the consumables on hand before the vials arrive. Desiccant, cryoboxes, labels and sealed secondary containers are worth stocking ahead of a shipment rather than after it.
Bacteriostatic water and sterile glass vials are listed in Lab Supplies, with prices across the catalogue running from $24.99 to $219.99 CAD. Ordering is limited to laboratories and qualified researchers.
For laboratory research use only. Not for human or veterinary use.
