Buying bulk peptides in Canada from us runs on one rule: the more vials in the cart, the less each vial costs. The ladder below is the same for every compound, it counts the whole order rather than one product line, and it is written for labs that restock many vials at a time.
Bulk peptides Canada: the volume ladder
| Total vials in the order | Discount on each vial | Typical use |
|---|---|---|
| 1 | List price | Method development or a first pilot |
| 2–3 | 5% off | A short run plus a backup vial |
| 4–6 | 15% off | Roughly a month of routine bench work |
| 7–9 | 25% off | One complete experiment from a single lot |
| 10+ | 35% off | A semester, a whole study or a shared core lab |
| Beyond a few cases | Custom quote | Held lots, standing orders and scheduled deliveries |
The count is taken across everything in the cart, so compounds and strengths can be combined freely. Ten vials of a single product qualify for 35%; so do six of TB-500 with four of GHK-Cu, or ten separate compounds at one vial apiece. The discount appears at checkout on its own. There is no coupon to enter and you do not need an account.
Every item in the shop is priced per vial, which means the ladder is the whole wholesale mechanism. Mixed orders go out together in a single tracked box, and any Canadian order above $200 ships free, so a typical bulk order pays nothing for delivery.
Wholesale peptides Canada: quotes past a few cases
Once a requirement grows beyond a few cases, the ladder stops being the right tool and we price it individually. Volume pricing on request applies across the full catalogue. We normally reply with a figure within one business day, and a request that includes the following can be priced first time:
- The compound, using the exact catalogue name, and the strength.
- How much you need, either as total milligrams or as a count of vials at a named size.
- Where it is going. A full address is best; the province is the minimum, because tax depends on the destination.
- Any deadline the material has to meet.
- Paperwork needs: a specific quote format, a purchase order reference or a vendor number.
If the study needs one consistent lot now, or you expect to top up from the same lot later, put that in the first message. It alters what we check before sending a number.
For programmes measured in months, a smaller number of larger orders usually works better than frequent small ones. There are fewer deliveries to receive and log, the material stays consistent, and there is less chance of a gap in supply halfway through.
Sizing an order from the experiment backwards
Orders that end up too small or too large usually began with the milligram figure printed on the vial. Start from the other end.
Take the working concentration and the volume each replicate uses. Multiply across replicates and conditions. Then add the material that never reaches an assay: liquid left in pipette tips, losses to tube walls when concentrations are low, and the aliquot spent on a pilot before the main run. Convert that total to peptide mass. Only then turn mass into a vial count, and do it with the net peptide content reported on the certificate, not the label weight. The two differ, and on a large order the difference is large too.
Finally, allow enough for one repeat of whichever step fails most often. Running short mid-series forces a reorder, and a reorder is how studies end up comparing results across batches, which is the exact problem buying in bulk was supposed to avoid.
Three things to settle before you order
Label weight overstates the peptide
The milligrams on a vial are a gross figure. Part of that mass is counter-ion and residual moisture, so a molarity worked out from the label comes out too high, and the error grows with every vial added. Background reading: what net peptide content means, TFA versus acetate salt forms and measuring water in freeze-dried peptides.
A blend’s milligram figure is the combined total
An 80mg blend holds 80mg across all of its components together, not 80mg apiece. Where a design relies on the concentration of one component, work from a per-component breakdown such as the KLOW component split.
Somewhere reliable to keep it
Volume only pays off if the vials can be stored correctly. Freeze-dried powder holds up well in a fridge at 2–8 °C. Solutions made up from it do not, however many vials you bought. Decide how you will aliquot before the delivery arrives: see aliquoting and vial entry and what light, oxygen and heat do to peptides.
Keeping one lot through a long study
Each certificate of analysis speaks for a single batch, not for the product in general. Purity, net peptide content and the impurity profile all belong to that batch, so two vials of one compound from two batches are, strictly, two slightly different materials.
Buying the full requirement in one go means the whole study runs on consistent material, removing a variable that is very difficult to account for after the fact. Over a project lasting months, a batch switch halfway through adds a step change that no statistical correction can fully take out. When consistency matters, note the batch number on the certificate when the first order comes in, and give it to us when you reorder so we can check whether that batch is still in stock. Finding out before shipping beats discovering it later as a jump in your data.
When a smaller order is the better buy
More is not always the right answer, and we would rather say so.
Sealed freeze-dried vials kept at the right temperature last a long time, so storing a big order is reasonable in principle. That reasoning fails when the freezer is shared, when power cuts are a known local problem, or when no one can promise the vials will stay closed and cold for the whole period. A big order in an unreliable freezer is a worse position than two modest ones.
It also fails when the method is still changing. Buying the whole requirement before the design has settled tends to leave you with stock for a concentration range you later dropped. A modest first order, with its batch number written down so later orders can be matched to it, keeps both flexibility and consistency.
Ordering for an institution
If the order is going into a university, hospital or other institutional setting, check your own purchasing and handling rules before placing it. Buying from a domestic supplier removes the customs step altogether; see importing compared with buying in Canada and the provinces and territories we deliver to.
Every compound is sold for laboratory research use only. Nothing here is for human or veterinary use.
Need a scheduled supply or quantities past a few cases? Our wholesale peptides Canada page explains how custom quotes and standing orders work.
