Storage temperatures for lyophilised peptides
| Situation | General guidance for freeze-dried peptides |
|---|---|
| Long-term storage | −20 °C or colder, sealed, dry and away from light |
| Short-term storage, days to weeks | 2 to 8 °C, sealed |
| Room temperature | Normal for hours or days in transit; not a place to store |
| Opening a vial | Let it reach room temperature first, so that moisture does not condense on the powder |
Each product's label states its own condition. Where the label and this table differ, follow the label.
Packing and paperwork
How your order is packed is stated on your quotation. Inside the carton: the delivery note, and a copy of the certificate of analysis for every batch in it.
Delivery in Egypt
| Delivery address | Delivery time after the order is confirmed |
|---|---|
| Cairo and Giza | Stated on your quotation |
| Alexandria, the Delta, the Canal cities, Upper Egypt and the other governorates | Stated on your quotation |
Any delivery charge is shown on the quotation. Your quotation also states how the goods reach Egypt and who handles import clearance.
Delivery addresses are business premises: a factory, a laboratory, an office or a warehouse. The named contact on the account, or a colleague at the same address, signs for the carton. Products are supplied to order. How to order covers the steps before dispatch.
How to store peptides on the day of delivery
- Receive it yourself, or have a named colleague do so. A carton should go from the courier to a cool room, not to a reception desk by a window or the back seat of a car.
- Inspect the outer carton and the temperature indicator if one is packed. Photograph any damage before opening.
- Count and compare: product, strength and number of boxes, then batch number and expiry against the delivery note and the certificate.
- Put each product into the storage its label names, freezer or refrigerator, on the day of delivery.
- Tell us the same day if anything is wrong, quoting the delivery note number. Claims must reach us within 48 hours of delivery. The terms are in claims and returns.
Transit and shelf life
Shelf life is counted in months and years of storage; transit is counted in hours or days. That is why laboratory suppliers ship most lyophilised peptides at ambient temperature, and why the storage condition on the label is the one to keep from the moment the carton is opened in your store.
Peptides in solution
Dissolved, a peptide is far less stable than it is as a powder. Peptide storage and handling covers dissolved material, aliquots and repeated freezing and thawing, written for laboratories.
Questions buyers ask
- What temperature should peptides be stored at?
For long-term storage of freeze-dried peptides, −20 °C or colder, sealed and dry. For short periods, 2 to 8 °C. Each product's label gives its own condition.
- Do you deliver outside Cairo?
Yes, to business addresses elsewhere in Egypt. The delivery time for your governorate is on your quotation.
- Can you deliver to a home address?
No. Every delivery goes to a business or institution, at the address checked when the account was opened. Who can buy explains the checks.