Free Bacteriostatic Water With Every Order

Every Pure U.S. Peptides order ships with a 10mL bacteriostatic water vial — 0.9% benzyl alcohol, sealed, multi-use. Choose any research compound and we add the free vial automatically. No code and nothing extra to add to your cart. U.S. shipping is free too.

Choose a research compound →Shop BAC water — 2 vial minimum

1 × 10mL Bacteriostatic Water — FREE

Added to every order before it ships. Free U.S. shipping included.

Choose a research compound →View bundles

How it works

Order any research compound.

One vial or twenty — there is no qualifying minimum.

We add the water for you.

The free 10mL vial is packed with your order and shows as a free gift line on your confirmation email. No promo code to remember.

Same-day U.S. dispatch.

Orders placed before 2pm EST on a business day ship the same day, free within the U.S. See our shipping policy.

What is in the vial

Volume	10mL
Composition	Sterile water, 0.9% benzyl alcohol
Vial type	Sealed multi-use stopper vial
Why the preservative matters	Benzyl alcohol inhibits bacterial growth after the stopper is punctured, so the vial can be drawn from more than once.
Extra vials	$15 each — the free vial is still included on top.

What else ships free

Free U.S. shipping — every order, no threshold.
Buy 5+ peptides, pick 1 free — 10+ earns 2 free, 15+ earns 2, 20+ earns 3.
A COA with your order — third-party HPLC testing, published per lot on the certificates page.

Frequently asked

Do I need a code to get the free bacteriostatic water?

No. A 10mL vial of bacteriostatic water is added to every Pure U.S. Peptides order before it ships. There is nothing to enter at checkout and nothing to add to your cart — it arrives in the box and appears as a free gift line on your order confirmation.

Is there a minimum order?

There is no minimum for research-compound orders, and U.S. shipping is free. BAC-water-only orders require two paid vials because the order also includes the free gift vial.

What exactly is bacteriostatic water?

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol as a preservative. The preservative is what makes the vial multi-use: it inhibits bacterial growth after the stopper has been punctured, which sterile water without preservative does not do.

Can I order additional vials?

Yes. Additional 10mL bacteriostatic water vials are $15 each and can be added to any research-compound order. BAC-water-only orders require two paid vials. The free vial is still included on top.

Pick your compounds — the water is on us

Lot-specific COAs, same-day U.S. dispatch before 2pm EST, and a free 10mL bacteriostatic water vial with every order.

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Research Use Only. All compounds sold by Pure U.S. Peptides, including bacteriostatic water, are intended exclusively for in-vitro research and laboratory use by qualified investigators. They are not intended for human or veterinary consumption.