Loading...
1 / 2
BAC Water
Add to Wishlist
USP-Grade Reconstitution Water with 0.9% Benzyl Alcohol
In Stock
Select Size
$15.00$18.00
You Save
$3.00In Stock — Ships Same Day
Includes
3ml research compound
Third-party lab tested
Free shipping on orders over $150
30-day money-back guarantee
Overview
USP-grade bacteriostatic water (BAC water) is the gold-standard reconstitution solvent for lyophilized peptide research compounds, containing 0.9% benzyl alcohol as a well-characterized bacteriostatic preservative that inhibits microbial reproduction without affecting peptide stability. Benzyl alcohol functions by disrupting bacterial cell membrane permeability and inhibiting critical metabolic enzymes, providing continuous antimicrobial protection that allows safe multi-dose access over 28 days after the first vial puncture. This product is manufactured to United States Pharmacopeia (USP) specifications under current Good Manufacturing Practice (cGMP) conditions, sterile-filtered through 0.22-micron membranes, and batch-tested for endotoxin levels via the LAL method, particulate matter, pH, and sterility before release. Bacteriostatic water is specifically preferred over plain sterile water for injection in peptide research because the benzyl alcohol preservative prevents bacterial colonization during the repeated vial entries that occur over a multi-day research protocol. The quality of reconstitution water is a critical but often overlooked variable in peptide research — substandard water containing endotoxins, microbial contaminants, or heavy metals can degrade peptide bonds, alter protein folding, and introduce artifacts that compromise experimental reproducibility and data integrity.
Handling & Storage
Draw desired volume with sterile syringe and inject slowly into peptide vial along the glass wall. Gently swirl (do not shake) to dissolve. Store refrigerated after opening.
Published Research Protocols
Typical reconstitution: 1-2ml per peptide vial depending on desired concentration. Use within 28 days of first puncture.
Research Applications
Multi-Use Safe
The 0.9% benzyl alcohol preservative provides continuous bacteriostatic action that inhibits microbial reproduction throughout the 28-day use window after the first vial puncture. This is critical for multi-dose peptide research protocols where the same vial of reconstituted peptide is accessed multiple times, as each needle entry introduces a small risk of environmental microbial contamination that the preservative system actively suppresses.
Initial effects within first month
USP Grade
Manufactured to United States Pharmacopeia (USP) specifications in an FDA-registered facility under cGMP conditions. Each batch undergoes 0.22-micron sterile filtration, LAL endotoxin testing, particulate matter analysis, pH verification, and sterility testing. USP grade represents the highest quality standard for pharmaceutical water products, ensuring consistent purity and reliability across every vial for reproducible research results.
Initial effects within first month
Peptide Compatible
Compatible with the full spectrum of lyophilized peptide research compounds including growth hormone secretagogues, GLP-1 agonists, BPC-157, thymic peptides, melanotan, nootropic peptides, and multi-peptide blend formulations. The 0.9% benzyl alcohol concentration and neutral pH are formulated to maintain peptide bond stability during reconstitution while providing antimicrobial protection throughout the storage period of the dissolved compound.
Initial effects within first month
Frequently Asked Questions
What is bacteriostatic water and why is it preferred over sterile water?
Bacteriostatic water is sterile water for injection containing 0.9% benzyl alcohol as a preservative that inhibits bacterial growth. Unlike plain sterile water for injection (which must be used once and discarded), bacteriostatic water can be safely accessed multiple times over 28 days because the benzyl alcohol continuously suppresses microbial reproduction. This makes it the preferred reconstitution solvent for peptide research protocols that require multiple dose withdrawals from a single reconstituted vial.
How does bacteriostatic water differ from antibacterial water?
Bacteriostatic water contains a specific, well-defined preservative — 0.9% benzyl alcohol — that meets USP specifications. Antibacterial water may contain different antimicrobial preservative systems. Both products serve the same primary purpose of providing sterile, preserved water for multi-dose peptide reconstitution. Bacteriostatic water with benzyl alcohol is the most widely referenced reconstitution solvent in published peptide research literature, which is why it is considered the standard for most research applications.
How should bacteriostatic water be stored and how long does it last?
Store unopened vials at controlled room temperature (15-25°C) away from direct sunlight. After the first needle puncture, refrigerate at 2-8°C and use within 28 days. Do not freeze bacteriostatic water as freezing can damage the vial closure integrity and alter the homogeneity of the benzyl alcohol distribution. Always swab the rubber stopper with a 70% isopropyl alcohol prep pad before each withdrawal to maintain the sterility of the remaining contents.
How much bacteriostatic water should be used to reconstitute a peptide vial?
The standard recommendation is 1-2ml of bacteriostatic water per peptide vial, though the optimal volume depends on the desired final concentration for your research protocol. Adding 1ml creates a higher concentration (useful for minimizing injection volumes), while 2ml creates a more dilute solution (useful for more precise dose measurement). To reconstitute, slowly direct the water stream down the inside wall of the peptide vial and gently swirl to dissolve. Never shake vigorously, as agitation can denature peptide structures through mechanical stress and foam formation.
Is this product for human use?
No. This product is sold exclusively for in-vitro research, laboratory use, and educational purposes. It is not intended or approved for human consumption, clinical injection preparation, or self-administration. Despite being manufactured to USP specifications, this product is supplied for research purposes only. Researchers must comply with all applicable institutional and jurisdictional regulations.
Important Notice
Not for human consumption. This product is sold exclusively for in-vitro research and laboratory use. It is not a drug, supplement, food item, or cosmetic and has not been evaluated by the FDA.
The research data and clinical references cited on this page are provided for educational reference only and do not constitute medical advice. This product must be handled by qualified research professionals in accordance with all applicable institutional and regulatory guidelines.
Use is restricted to qualified researchers or laboratories operating within appropriate legal and ethical research guidelines. By purchasing, you confirm you are acquiring this product solely for lawful research purposes.
Research Articles
Published research and educational content related to BAC Water
Guides11 min read
The Complete Guide to Peptide Reconstitution for Research
A step-by-step guide to reconstituting lyophilized research peptides, covering solvent selection, concentration calculations, proper technique, post-reconstitution storage, and common mistakes to avoid.
Michael TorresContent Director
Research14 min read
Immune-Modulating Peptides: Thymosin Alpha-1, LL-37, and KPV Research
An overview of three key peptides being studied for their immune-modulating properties, covering innate and adaptive immune mechanisms, published research findings, and the current state of immunopeptide science.
Michael TorresContent Director
Research13 min read
Metabolic Research Peptides: Semaglutide vs Tirzepatide vs Retatrutide
A comparative analysis of single, dual, and triple incretin receptor agonists in metabolic research, examining mechanism differences, published clinical data, and structural innovations driving this rapidly evolving field.
Dr. James ParkResearch Analyst
Guides11 min read
How to Read a Certificate of Analysis: Peptide Purity Testing Explained
A detailed guide to understanding Certificates of Analysis for research peptides, including HPLC purity, mass spectrometry validation, endotoxin testing, and key red flags that indicate quality issues.
Dr. Sarah ChenChief Science Officer