Peptide-Grade · Third-Party Verified

Bacteriostatic Water You Can Trust

Pharmaceutical-grade sterile water with 0.9% benzyl alcohol. USP-compliant, third-party lab tested, and shipped with a full certificate of analysis — every order, every time.

PureBac 30mL Bacteriostatic Water vial

Preservative

0.9% Benzyl Alcohol

Third-Party Verified

Vanguard Laboratory
0.9% Benzyl Alcohol USP pH 6.66 — in spec Endotoxins within limits Made in the USA COA included every order
Products
Choose Your Size

Every vial is individually sealed, sterile-filtered, and ships with a certificate of analysis from an independent laboratory.

PureBac 10mL vial
10 mL Vial
Single-cycle use or a first order to verify quality before buying in bulk.
$8
per vial
  • 0.9% benzyl alcohol
  • Sterile flip-top cap
  • COA included
Most Popular PureBac 30mL vial
30 mL Vial
The standard for peptide protocols. Multi-dose rated for 28 days after opening.
$18
per vial
  • 0.9% benzyl alcohol
  • 30 mL multiple-use vial
  • Safe 28 days post-open
  • COA included
PureBac 10-pack bundle
10-Pack Bundle
30 mL vials in bulk. Best value for ongoing protocols or resellers.
$149
10 × 30 mL — save $31
  • 10× 30 mL sterile vials
  • Priority shipping included
  • Lot COA included
  • Insulated packaging
Lab Results
Independent Quality Testing

Every batch is independently tested and released only after passing all USP specifications.

AnalysisMethodResultStatus
Benzyl Alcohol ContentHPLC-UV/VIS0.9%Pass
pHUSP <791>6.66Pass
EndotoxinsLALWithin limitsPass
Total Dissolved SolidsSM 2540C≤ 1.3 µS/cmPass
ConductivitySM 2510B9.23 µS/cmPass
AppearanceVisualClear, colorlessPass
Total Organic CarbonUSP <643>388 ppbPass
Heavy Metals (as Pb)USP <232>≤ 0.1 ppmPass

Pass/Fail per US Pharmacopeia <1231> limits. All testing performed by an independent accredited laboratory. Full COA included with every order.

Why Third-Party Testing Matters

PureBac sources from a GMP-compliant, FDA-registered manufacturing facility and requires independent laboratory verification before any lot is released. You get the actual results — not a self-certification.

GMP-Compliant Facility FDA Registered USP <71> Sterility ISO 13485 Standards cGMP 21 CFR 210 & 211 IAC Accredited Lab

What's in Your COA

Each order ships with the certificate of analysis for your specific lot. It includes benzyl alcohol %, pH, endotoxin levels, TDS, conductivity, and the independent lab's sign-off. No guessing — just documentation.

Specifications
Product Details
Formulation
PreservativeBenzyl Alcohol 0.9%
Water Content99.1%
pH Range4.0 – 7.0
Endotoxin limit≤ 0.25 EU/mL
TDS≤ 1.3 µS/cm
Heavy Metals≤ 0.1 ppm
AppearanceClear, colorless, odorless
Packaging & Storage
Container30 mL multi-use vial
StopperBromobutyl rubber
Post-open shelf life28 days
Storage temp20–25°C
Filtration0.22 µm membrane
Compliance
StandardsUSP / cGMP
CFR21 CFR Parts 210 & 211
SterilityUSP <71> aligned
FacilityFDA Registered, USA
Process standardISO 13485
Common use cases
Peptide reconstitution Tirzepatide Semaglutide BPC-157 CJC / Ipamorelin NAD+ Tesamorelin SS-31 Research labs
FAQ
Common Questions
Bacteriostatic water is sterile water preserved with 0.9% benzyl alcohol. The preservative inhibits bacterial growth after the vial is opened, making it safe for multi-dose use. It's the standard diluent for reconstituting lyophilized peptides and proteins for injection.
Once punctured, use the vial within 28 days. Store at room temperature (20–25°C) or refrigerated. Always use a new sterile needle for each draw to maintain the sterility of remaining contents.
Plain sterile water is single-use only — once opened, it can't safely be reused. Bacteriostatic water contains 0.9% benzyl alcohol which prevents bacterial growth after puncture, making it safe for multi-dose protocols over up to 28 days.
Yes — every order ships with the COA for the specific lot you receive. It includes independent lab results for benzyl alcohol content, pH, endotoxins, conductivity, and more. You can also request the current lot COA before ordering by contacting us.
Orders placed before 2 PM EST ship same day. Standard delivery is 2–5 business days. Expedited 1–2 day options available at checkout. All orders are packed in insulated packaging to protect product integrity.
Yes. Use the contact form below or email us directly for wholesale pricing. Bulk orders also receive priority shipping and a dedicated lot COA. We work with peptide sellers, wellness clinics, and research labs.
Contact
Get in Touch

Questions about an order, wholesale pricing, or requesting a COA before you buy? We respond within one business day.

Email

support@purebac.com

Phone

(800) 555-0198

Hours

Mon – Fri, 9 AM – 5 PM EST