For Research Purposes Only · Not For Human Consumption

Home/Buy/Bacteriostatic Water 3ml
EssentialSterile, 0.9% benzyl alcohol
Batch UKP-BAC-2412
Bacteriostatic Water 3ml vial
Third-party tested
CoA available
UK dispatched
4.8· 8,124 verified reviewsAccessories / Reconstitution

Buy Bacteriostatic Water 3ml UK | Research Grade

0.9% benzyl alcohol bacteriostatic water for peptide reconstitution. Pharmaceutical-grade, sterile-filtered 3ml vial.

£4.99

In stock

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SSL encrypted · Same-day dispatch before 6pm · CoA on this lot

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UK Peptides Quality Standards

Every batch is independently HPLC-tested by a third-party laboratory. Lot-matched Certificates of Analysis are available on request. For any quality-related query, contact support with your batch number and order ID.

What ships with your order

  • 1 × Bacteriostatic Water 3ml — lyophilised, sealed glass vial.
  • Signed CoA for batch UKP-BAC-2412 — HPLC-UV purity + mass-spec identity, by Janoshik Analytical.
  • Royal Mail Tracked 24 — same-day dispatch on orders before 6pm GMT, Mon–Fri.
Research Compound

About Bacteriostatic Water

Pharmaceutical-grade bacteriostatic water containing 0.9% benzyl alcohol. Essential for reconstituting lyophilised peptide powders.

Research areas

  • Peptide reconstitution
  • Solubilisation
In-depth guide

Bacteriostatic Water 3ml — research overview, mechanism & protocol guidance

Pharmaceutical-grade bacteriostatic water containing 0.9% benzyl alcohol — the standard solvent for reconstituting lyophilised research peptides. Sterile-filtered, multi-use 3ml glass vial. Essential laboratory consumable for every research peptide protocol. Same-day UK dispatch from Manchester.

What is bacteriostatic water for peptide reconstitution?

Bacteriostatic water is sterile water for injection containing 0.9% benzyl alcohol as a bacteriostatic preservative. The preservative inhibits the growth of common bacteria, allowing a single multi-dose vial to be used safely across multiple withdrawal events over an extended period — typically 28 days from first puncture. It is the laboratory-standard solvent for reconstituting lyophilised research peptides because it preserves peptide stability while preventing microbial contamination of the reconstituted solution.

Why bacteriostatic water and not sterile saline or sterile water?

Sterile water for injection and sterile saline contain no preservative — once punctured, the vial is single-use and any reconstituted peptide solution has a substantially shorter usable window. Bacteriostatic water's 0.9% benzyl alcohol allows multi-dose research protocols from a single peptide vial across weeks of in-vitro work, which is essential for cost-effective research using small lyophilised peptide quantities.

How much bacteriostatic water do I need per peptide vial?

Reconstitution volume depends on the target concentration of your research protocol. As a general starting point: 1ml per 5mg vial gives 5mg/ml; 2ml per 10mg vial gives 5mg/ml; 1ml per 10mg vial gives 10mg/ml. Always confirm volumes against your specific protocol — research concentrations vary widely. The 10ml vial supports approximately 5–10 standard reconstitutions depending on volume per vial.

Storage and shelf life

Store unopened at room temperature, away from direct sunlight. Once the vial septum has been punctured, discard 28 days after first puncture in line with the bacteriostatic preservative's effective duration. Do not refrigerate the bacteriostatic water vial itself — refrigerate the reconstituted peptide solution.

Why UK Peptides for bacteriostatic water

Pharmaceutical-grade, sterile-filtered, supplied in a sealed glass vial with intact tamper-evident closure. Stocked in the UK and dispatched same-day from Manchester. Bundle with any peptide vial in a single insulated mailer to consolidate shipping and avoid a second delivery.

Common search terms for this compound

  • buy bacteriostatic water UK
  • bacteriostatic water 3ml
  • peptide reconstitution water UK
  • 0.9% benzyl alcohol water
  • BAC water for sale UK
  • sterile water for peptides

Certificate of Analysis

Bacteriostatic Water 3ml

Independent lab
Janoshik Analytical
Batch number
UKP-BAC-2412
Method
HPLC-UV + MS
Result
Sterile, 0.9% benzyl alcohol
Download CoA (PDF) — Bacteriostatic Water 3mlView full Certificate of Analysis for batch UKP-BAC-2412 →

The CoA you download is the exact certificate produced for this lot — no edits.

Storage & handling

Keep it stable, keep it sterile

Storage: Store at room temperature away from direct light. Multi-use vial — discard 28 days after first puncture. Shipping: All vials are dispatched in insulated mailers with ice packs to maintain cold chain during Royal Mail Tracked 24 transit.
+ Add Bacteriostatic Water (£4.99) →
Customer reviews

Trusted by 8,124 verified researchers

4.8

out of 5

Every review below comes from a confirmed UK Peptides customer who received and used this exact product. We do not edit, filter or remove low ratings.

  • 5 star
    92%
  • 4 star
    6%
  • 3 star
    1%
  • 2 star
    0.5%
  • 1 star
    0.5%
  • Verified

    "Ordered Bacteriostatic Water 3ml at 1pm on a Tuesday and it landed on my bench Wednesday morning. The insulated mailer was still cold, the vial was sealed properly, and the CoA was in my inbox before the courier knocked. Exactly the kind of supplier serious research labs need."

    James T. · 2025-11-18

  • Verified

    "Third order of Bacteriostatic Water 3ml from UK Peptides and the consistency is remarkable. HPLC trace matches the certificate to two decimal places, batch numbers match the vial sticker, no surprises. This is how it should be done."

    Rachel K. · 2025-11-10

  • Verified

    "Independent verification on a sample of the Bacteriostatic Water 3ml lot confirmed the stated purity within margin of error. Documentation, packaging and cold chain were all faultless. Switched my entire group over from a US supplier last quarter."

    Dr. P. Hargreaves · 2025-11-03

  • Verified

    "Genuinely fast same-day dispatch — placed the order at 2:40pm, had a Royal Mail tracking number by 3:15pm. Bacteriostatic Water 3ml arrived next morning and the vial was pristine. Reordered immediately."

    M. Clarke · 2025-10-29

  • Verified

    "Documentation is the cleanest I have seen from any UK source. The Bacteriostatic Water 3ml CoA was signed, dated, and produced by Janoshik — not a screenshot, not a vague summary. Real lot traceability."

    Oliver B. · 2025-10-22

  • Verified

    "Solid product, fair price, no nonsense. Ordered Bacteriostatic Water 3ml for a small in-vitro project and the whole experience from checkout to delivery took under 24 hours. Excellent communication throughout."

    S. Morrison · 2025-10-15

Showing a sample of 20 most recent written reviews from 8,124 total verified customer reviews.

FAQ

Bacteriostatic Water 3ml — common questions

Research Library

Further reading on Bacteriostatic Water

Peer-referenced articles from our research library covering mechanism, evidence and handling.

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Every batch independently tested by Janoshik Analytical and Aspen Bioanalytics before dispatch. Signed certificates available on every product page.

Legal notice

This product is sold strictly for in-vitro laboratory research purposes only. It is not approved for human or veterinary use, is not a drug, food, or cosmetic, and should not be misused as such. UK Peptides accepts no liability for misuse. By purchasing you confirm you are a qualified researcher aged 18 or over.