Key takeaways
- Fix the total milligrams a protocol needs before choosing between 5 mg and 10 mg vials.
- Choose 10 mg vials to keep an extended series on a single lot; choose 5 mg vials to limit material held in storage.
- Download the certificate of analysis for each lot and file it against the lot number on the vial label.
- Ask any supplier for purity paired with its test method, such as ≥99% by HPLC, not a bare percentage.
- Order bacteriostatic water and sterile 10 mL glass vials with the peptide to keep one tracked shipment.
5 mg or 10 mg per vial
Choose the vial size that matches the quantity of peptide a protocol consumes before the vial is opened a second time. A 5 mg vial suits short in-vitro work and method development; a 10 mg vial suits repeat assays that draw on the same lot.
Every peptide in the /product-category/research-peptides/ catalogue is supplied lyophilized in a sealed vial. The catalogue lists BPC-157, TB-500, GHK-Cu, CJC-1295 (no DAC), Ipamorelin, Epithalon, Semax, Selank and MOTS-c. Prices across the catalogue run from $24.99 to $219.99 CAD.
Two practical points decide the size. First, how much material a single experiment consumes. Second, how long the remaining material will sit in storage between uses. A 10 mg vial lowers the cost per milligram; it also extends the period over which one lot is held. For laboratory research use only. Not for human or veterinary use.
What the certificate of analysis records
Each lot ships with a downloadable certificate of analysis. The certificate states identity, purity and the test method used to determine that purity.
Purity is determined by third-party HPLC, with mass spectrometry supporting identity. Purity is never quoted on its own in our documentation; it is always paired with its method, for example ≥99% by HPLC. A purchasing officer comparing suppliers should ask for the same pairing, because a bare percentage cannot be audited.
- Identity — peptide name as ordered, confirmed by mass spectrometry.
- Purity — a figure with its test method, determined by HPLC.
- Test method — named on the certificate, not implied.
- Lot number — printed on the vial label and repeated on the certificate.
The lot number is the link between the vial on the bench and the document in the file. Record it in the notebook at the point of receipt.
Cost per milligram across the catalogue
Vial size changes the arithmetic of a purchase order. The table below shows how to compare, using the catalogue price range rather than any single product price.
| Consideration | 5 mg vial | 10 mg vial |
|---|---|---|
| Cost per milligram | Higher | Lower |
| Material held in storage after first use | Less | More |
| Number of lots per year for the same total quantity | More lots, more certificates | Fewer lots, fewer certificates |
| Suits | Method development, single-protocol work | Repeat assays drawn from one lot |
There is a documentation argument for each. Ordering more 5 mg vials produces more certificates of analysis and more lot numbers to track. Ordering 10 mg vials concentrates a longer run of work on a single lot, which removes lot-to-lot variation from the record. Laboratories running a comparison series across months often prefer the second.
Matching vial size to the work
1. Fix the total quantity first
Write down the milligrams the study needs, including replicates. Only then divide that figure into vials. Ordering by vial count before quantity leads to part-used vials in storage.
2. Decide how many lots the study may contain
If the protocol requires one lot from start to finish, 10 mg vials reduce the chance of a mid-study lot change. If the protocol tolerates several lots, 5 mg vials give tighter control over what is held open.
3. Order consumables in the same purchase
Bacteriostatic water and sterile 10 mL glass vials are listed in /product-category/lab-supplies/. Ordering them with the peptide keeps one tracked shipment and one set of paperwork. Sterile 10 mL glass vials are useful where a laboratory prepares its own labelled aliquot containers for in-vitro work.
4. File the certificate before the vial is opened
Download the certificate of analysis for the lot and attach it to the purchase record. The document is per lot, not per order.
Peptides in the catalogue
All nine peptides are supplied as lyophilized powder in 5 mg and 10 mg vials. Identity for each is confirmed by mass spectrometry and purity by HPLC, stated per lot.
- BPC-157 and TB-500 — peptide sequences widely used as reference materials in in-vitro work.
- GHK-Cu — a copper-containing tripeptide complex; the copper co-ordination is part of its identity and is reflected in the molecular weight recorded for the lot.
- CJC-1295 (no DAC) and Ipamorelin — often ordered together for in-vitro comparison; ordering both in 10 mg vials keeps each on a single lot.
- Epithalon, Semax and Selank — short sequences supplied under the same per-lot documentation.
- MOTS-c — supplied lyophilized, with identity and purity stated by method on the certificate.
Where a shopper would expect a statement of use, the answer is the same across the /product-category/research-peptides/ catalogue: for research use only. We publish identity, quantity, purity with method, storage and lot documentation, and nothing about effects. For laboratory research use only. Not for human or veterinary use.
Packaging, storage and shipping
Each vial travels in cold-chain packaging with desiccant. Shipping is tracked and leaves from Vancouver.
On arrival, inspect the vial, confirm the lot number against the certificate of analysis, and move the vial to storage. Lyophilized peptides are held cold and dry; the desiccant supplied in the package indicates how the material was shipped and is not a substitute for laboratory storage conditions. Keep vials sealed until required.
A 10 mg vial spends longer in storage than a 5 mg vial for the same rate of use. Laboratories with limited cold storage sometimes prefer several 5 mg vials for that reason alone. The decision belongs to the laboratory, not the supplier.
Ordering and lot traceability
Ordering is limited to laboratories and qualified researchers. Purchase orders from Canadian universities, contract research organisations and private laboratories are handled the same way: one tracked shipment, one certificate of analysis per lot, lot numbers on every vial label.
Three records should agree at the end of a purchase: the vial label, the packing documentation and the downloaded certificate. If a laboratory requires a single lot for an extended series, note that on the order so the quantity can be filled from one lot where stock allows.
Prices are in Canadian dollars, from $24.99 to $219.99 CAD across the catalogue, and shipping is tracked to addresses in every province. For laboratory research use only. Not for human or veterinary use.