Where to buy bacteriostatic water.
Bacteriostatic water is sold two ways: as a clinical product through pharmacies and medical suppliers, and as a laboratory reagent through research suppliers. For research use, what matters is a sealed, documented vial from a tested lot, in a size you will use before the 28-day limit runs out.
Clinical product or research reagent.
Bacteriostatic water is sterile water with 0.9% benzyl alcohol, a preservative that suppresses bacterial growth so a vial can be entered more than once. Pharmacies and medical suppliers carry versions labeled for clinical use, made and labeled under drug rules. Research suppliers sell it as a laboratory reagent, labeled for research use only.
Helion's is the second kind: a laboratory reagent for research use, not a product for use in people or animals.
Bacteriostatic water near me, or shipped.
A search for bacteriostatic water near me mostly turns up pharmacies and medical suppliers. Their versions are clinical products, and the FDA-listed pharmacy labels mark them Rx only, so a local pharmacy may not sell a vial without a prescription. Research suppliers sell bacteriostatic water as a laboratory reagent and ship it, labeled for research use only. Ordering online also lets you check the lot's lab report before the vial arrives, which a store shelf rarely does.
What to check.
- Composition: sterile water with 0.9% benzyl alcohol, stated on the label.
- A sealed vial with an intact cap and stopper.
- A lot number and expiration date printed on the vial.
- A lab report for that lot, ideally from an independent laboratory, covering identity and endotoxin, with a way to check it with the lab.
- A vial size you will use within 28 days of first opening it.
Why a smaller vial wastes less.
Under USP chapter 797, an opened multiple-dose container gets a beyond-use date of 28 days unless its manufacturer states otherwise. Whatever is left in the vial after that is discarded, so a large vial opened for a small amount mostly goes to waste. Buying in the size you use, and opening a fresh vial when the last one reaches 28 days, keeps every vial in spec.
| Vial state | How long it lasts |
|---|---|
| Sealed | Until the labeled expiration date |
| Opened | 28 days from the first puncture, unless the label says otherwise |
The full guide to how long bacteriostatic water lasts covers storage and when to discard a vial.
Signs to buy elsewhere.
- No lot number or expiration date on the vial.
- No lab report for the lot, or a report nobody can verify.
- Cloudy liquid, particles, or a damaged cap or stopper on arrival.
- Directions or claims about use in people on a research product.
A tested 3ml vial, shipped from the U.S.
Helion sells Bacteriostatic Water 3ml for $8.99 per vial. Lot 060226A was tested by ILS Laboratories under certificate COA-2026-955712: identity confirmed, 99.87% HPLC purity and endotoxin below 0.05 EU/mL, and the report can be checked on ILS's own verification page.
Orders ship from the U.S. by USPS Priority Mail, the same day when placed by 2pm PT Monday to Friday, with free shipping at $250. It is sold for laboratory research use only, to buyers 21 and over. Bacteriostatic water is not part of the buy 2, get 1 free offer, which covers peptides.
More on bacteriostatic water.
The bacteriostatic vs sterile water guide explains the difference one ingredient makes, and how long bacteriostatic water lasts covers dating and discarding a vial.
Specs and storage by compound.
Questions (6)
Where can I buy bacteriostatic water?
Pharmacies and medical suppliers carry versions labeled for clinical use; research suppliers sell it as a laboratory reagent. Helion sells a tested 3ml vial for laboratory research use, shipped from the U.S.
Can I buy bacteriostatic water online?
Yes. Research suppliers sell it online as a laboratory reagent. Check for a sealed vial, a lot number, an expiration date and a lab report for that lot.
Is there bacteriostatic water near me?
Local pharmacies and medical suppliers may stock versions labeled for clinical use. For research use, Helion ships its tested 3ml vial from the U.S. by USPS Priority Mail, the same day on orders placed by 2pm PT Monday to Friday.
How much does bacteriostatic water cost?
Helion's is $8.99 per 3ml vial. Prices vary by vial size and supplier; a smaller vial wastes less, because an opened vial is good for 28 days.
What size bacteriostatic water vial should I buy?
One you will use within 28 days of first opening it, since that is the standard limit for an opened multiple-dose vial. Smaller vials mean less waste.
Is Helion's bacteriostatic water tested?
Yes. Lot 060226A was tested by ILS Laboratories: identity confirmed, 99.87% HPLC purity and endotoxin below 0.05 EU/mL. The certificate is in the COA Portal with a link to the lab's verification page.
Published studies (3)
- Antimicrobial preservative use in parenteral products: past and present
- The prevalence of multidose vial contamination by aerobic bacteria in a major teaching hospital, Shiraz, Iran, 2006
- Bacterial contamination of multiple-dose vials: a prevalence study
Citations from PubMed for reference. They describe the compound in the literature, not any Helion lot, and nothing here is guidance on use.