The practical problem with buying diluent is matching the bottle to the 28-day clock. Once punctured, any multi-dose vial has the same countdown regardless of volume, so unused solution past that window is money poured away. At 1 to 3ml per peptide vial, 10ml covers three to ten reconstitutions, which lines up with a typical single research cycle. You open it, run the protocol, and finish the bottle inside its window instead of binning two thirds of a larger one.
Running back-to-back cycles or reconstituting weekly? The 30ml bottle works out cheaper per ml and still fits the window.
The Formula
Sterile water for injection with 0.9% benzyl alcohol, nothing else, both stated on the label. The preservative is what makes multiple draws from one vial possible: it stops bacteria multiplying inside the bottle between withdrawals, matching the USP bacteriostatic water monograph used clinically.
Check any competing listing against that label standard. Marketplace “reconstitution solution” is routinely unpreserved sterile water, which is fine for one draw and a contamination risk from the second draw onward. No benzyl alcohol on the label means single-use water, whatever the listing title says.
After You Open It
Unopened, keep it at controlled room temperature out of direct light through the printed expiry. From first puncture: refrigerate at 2 to 8C, swab the stopper before each draw, use a fresh sterile syringe every time, and write the opening date on the vial. Twenty-eight days is the limit; the smaller format exists precisely so that limit never forces waste.
No Restocks, Ever
Sterile goods sold here move in one direction. We refuse all returns on them and restock nothing, so your vial has never left the sealed supply chain between factory and your door. If it arrives damaged, report within 5 days with a photo for a full refund or replacement, and in most cases you will not be asked to send anything back.
Specifications table
| Spec | Detail |
|---|---|
| Volume | 10ml |
| Composition | Sterile water for injection, benzyl alcohol 0.9% |
| Standard | USP bacteriostatic water monograph |
| Format | Multi-dose vial, rubber stopper, flip-cap seal |
| Use window after puncture | Up to 28 days, refrigerated |
| Unopened storage | Controlled room temperature, away from light |
| Documentation | Batch/lot paperwork on request |
| Shipping | Same day on orders before 1pm EST, tracked |
FAQ
Is 10ml enough for my cycle?
At 2ml per reconstitution, five peptide vials; at 1ml, ten. If your protocol reconstitutes more than that inside a month, step up to the 30ml.
Why buy 10ml instead of the cheaper-per-ml 30ml?
The 28-day window. If you will not use most of a 30ml within a month of opening it, the smaller vial wastes less. Price per ml only matters on solution you actually use.
Can I keep an unopened spare on hand?
Yes. The 28-day clock only starts at first puncture. An unopened 10ml stores at room temperature until its printed expiry, which makes it a sensible backup alongside whatever you have open.
