Where to Buy BAC Water
Sterile bacteriostatic water with 0.9% benzyl alcohol, shipped within 24 hours.
Buy bacteriostatic water
10 mL vials, sold on Bluum Peptides as Reconstitution Solution.
| Pack | Price | Per vial | Saving |
|---|---|---|---|
| 1 vial | $15.00 | $15.00 | None |
| 5 vials | $71.25 | $14.25 | 5% |
| 10 or more | $135.00 | $13.50 | 10% |
Checkout is on Bluum Peptides, where you choose the quantity. Free 2-Day Air shipping on qualifying orders of $200 or more, and Overnight Air is available. For bulk pricing, email hello@bluumpeptides.com.
Bacteriostatic water specifications
- Product
- Bacteriostatic water (BAC water), 10 mL
- Composition
- Sterile water with 0.9% benzyl alcohol
- pH, current lot
- 6.44
- Endotoxin, current lot
- ≤0.05 EU/mL
- Appearance
- Clear, colorless, free from visible particles
- Container
- Sterile borosilicate glass vial with self-sealing stopper
- Storage
- Unopened: 2 to 8 °C (36 to 46 °F). Protect from heat, freezing and direct light.
- Sold as
- Bluum Peptides Reconstitution Solution, SKU RS10
Where to buy BAC water
Bacteriostatic water is sold through a few kinds of sellers. They differ in what they ask of you, how fast you get it, and how much documentation comes with it.
Pharmacies
Stock bacteriostatic water for clinical use and may ask for a prescription before selling it.
Medical and lab supply companies
Often sell by the case and may need a business or institutional account.
Online marketplaces
Listings come and go, and the seller, lot and storage history are often hard to check.
Research suppliers such as Bluum Peptides
Sell single vials or small packs for laboratory research, ship quickly, and publish lot test results.
What to check before you buy
- Benzyl alcohol contentTrue BAC water contains 0.9% benzyl alcohol. Plain sterile water does not.
- Lot test resultsLook for a certificate of analysis with pH and bacterial endotoxin for the lot you will receive.
- Sealed, sterile vialAn intact cap and a self-sealing stopper that can be entered more than once.
- Batch and lot trackingThe lot number on the vial should match the report.
- Shipping timeFast, tracked shipping keeps a short project on schedule.
Bluum Peptides covers each of these. Every lot is independently tested and the report is public in the lab report library.
Lab results for the current lot
Lot RS102606-100B, tested by two independent labs.
| Test | Result | Lab and date |
|---|---|---|
| pH | 6.44, pass | BioRegen, 2026-07-29 |
| Bacterial endotoxin | <0.05 EU/mL, pass | BioRegen, 2026-07-29 |
| pH | 6.44, pass | Freedom Diagnostics, 2026-06-18 |
| Bacterial endotoxin | ≤0.05 EU/mL, pass | Freedom Diagnostics, 2026-06-18 |
Look up the full report for any lot in the lab report library, or see the full specifications.
What is BAC water?
BAC water, short for bacteriostatic water, is sterile water with 0.9% benzyl alcohol.
The benzyl alcohol is a preservative that slows bacterial growth after the vial is opened. That is why BAC water is the usual choice when one vial must be entered more than once, for example to reconstitute lyophilized (freeze-dried) research peptides and other powders over several days.
BAC water vs sterile water
| Property | Bacteriostatic water | Sterile water |
|---|---|---|
| Preservative | 0.9% benzyl alcohol | None |
| After opening | Multi-use with clean technique | Single use, discard the rest |
| Typical lab use | Reconstituting and storing lyophilized materials over days | One-time preparations, or where benzyl alcohol must be avoided |
Some materials are not compatible with benzyl alcohol. Check the data sheet for the compound you are preparing before choosing a diluent. If you need a buffered diluent at physiological pH instead, see sterile phosphate buffered saline.
Storage and handling
Keep it cold
Keep unopened vials refrigerated at 2 to 8 °C and out of direct light. Do not freeze.
Enter it clean
Wipe the stopper with alcohol before each entry and use a new sterile needle every time.
Date it when opened
Many labs discard a multi-use vial 28 days after first opening. Follow your lab’s rules and the label.
Check before use
Discard any vial that turns cloudy, shows particles or changes color.
Frequently asked questions
Where can I buy BAC water?
You can buy bacteriostatic water from pharmacies, medical and laboratory supply companies, and research suppliers. For research use, Bluum Peptides sells sterile vials online, with independent lab results for every lot and fast U.S. shipping.
What is BAC water?
BAC water is short for bacteriostatic water: sterile water with 0.9% benzyl alcohol added. The benzyl alcohol slows bacterial growth, so a vial can be entered more than once.
What is the difference between BAC water and sterile water?
Sterile water has no preservative and is meant for a single use once opened. Bacteriostatic water contains 0.9% benzyl alcohol, which lets a vial be used several times with clean technique.
How much does BAC water cost?
At Bluum Peptides one vial is $15. Five vials are $71.25 (5% off) and ten are $135 (10% off).
How should BAC water be stored?
Store unopened vials at 2 to 8 °C (36 to 46 °F), away from heat, freezing and direct light. Many labs discard a multi-use vial 28 days after it is first opened; follow your lab’s rules and the label.
Is this BAC water tested?
Yes. Each lot is tested by an independent lab. The current lot, RS102606-100B, measured pH 6.44 and endotoxin under 0.05 EU/mL.
How fast does it ship?
Orders are processed within 24 hours. 2-Day Air shipping is free on qualifying orders of $200 or more, and Overnight Air is available.
Buy BAC water from Bluum Peptides
Sterile 10 mL vials, lot-tested for pH and endotoxin.
$13.50a vial in packs of ten, $15 for one
Order BAC waterResearch use only. Bacteriostatic water sold here is a laboratory reagent for in vitro research. It is not a drug, food or cosmetic and is not for human or animal use.