The conditions to control
| Factor | Why it matters | What to do |
|---|---|---|
| Temperature | Heat speeds up degradation of many peptides | Keep stock cold, commonly in a freezer for long-term storage and a fridge for working stock, as each product's conditions state |
| Moisture | Freeze-dried powder absorbs water once exposed | Keep vials sealed, store in closed containers with desiccant, and let cold vials reach room temperature before opening a storage container |
| Light | Some peptides are sensitive to light | Store in closed boxes or opaque containers; use amber vials where needed |
| Temperature swings | Repeated warming and cooling stresses stock | Open storage as briefly as possible and keep working stock separate from long-term stock |
Equipment worth having
- A dedicated fridge and freezer for stock, not shared with food.
- A digital thermometer or data logger in each unit that records the temperature over time.
- Closed, labelled bins by product and batch, with desiccant packs.
- A backup plan for a power cut, such as a second unit or a contact who can hold stock.
Keep a temperature record
A short daily record, or a logger that keeps one for you, answers the question every serious wholesale buyer eventually asks: how was this stored? If a unit fails, the record also tells you which batches were exposed and for how long, so you can decide what to retest rather than guessing.
Quarantine, release and picking order
- When a batch arrives, store it in a separate quarantine area until its lab report passes.
- Once released, label the bin with the product, batch and date received.
- Pick from the oldest released batch first, so stock does not age at the back of the freezer.
- Record which batch filled each order, so a buyer's lab report always matches their vial.
- Check retest or expiry dates every month and pull anything close to its date.
Our guide to batch and lot tracking covers the records side, and the COA expiry calculator shows when reports and retest dates run out.
Retest dates
A retest date is the date by which a batch should be tested again to confirm it still meets its specification. It is not the same as an expiry date. Stock past its retest date is not automatically bad, but you cannot show a buyer current evidence that it is still good. Either retest it or stop selling it.
When storage goes wrong
- Put affected batches on hold straight away.
- Use your temperature record to see how long and how far conditions were off.
- Retest a sample from each affected batch before releasing it again.
- Write down what happened and what you changed, and keep it with the batch records.
Doing it in Purity
Purity keeps new batches in quarantine until their report passes, allocates stock from the oldest released batch, and records the batch on each order line. A failed or expired report puts the batch on hold automatically, and lab reports about to expire show up on the overview before they run out. See a batch's expiry date or try the demo.
Common questions
- How should a seller store research peptide inventory?
- Cold, dry and dark, following each product's stated storage conditions: commonly a freezer for long-term stock and a fridge for working stock, in closed containers with desiccant, with a temperature record.
- What is a retest date on a peptide batch?
- The date by which the batch should be tested again to confirm it still meets its specification. After it, either retest or stop selling the batch.
- What should I do if my peptide freezer fails?
- Put affected batches on hold, check the temperature record for how long conditions were off, and retest a sample from each batch before releasing it again.