In the realm of parenteral medicine and advanced peptide research, the purity and stability of a solvent are not merely conveniences—they are fundamental requirements for safety, efficacy, and reproducibility. Bacteriostatic Water 2mL is engineered to meet this critical need. More than just sterile water, it is a specialized pharmaceutical-grade solution designed for the safe and effective reconstitution of lyophilized (freeze-dried) medications, peptides, hormones, and other injectable compounds. Each 2mL vial contains 0.9% benzyl alcohol as a preservative, allowing for multi-dose use within a 28-day period while inhibiting microbial growth. This professional-grade diluent is your assurance of precision, safety, and compliance in clinical, research, and controlled therapeutic environments.
Bacteriostatic Water for Injection, USP, is a sterile, non-pyrogenic aqueous solvent. Its defining characteristic is the inclusion of 0.9% (9mg/mL) Benzyl Alcohol. This preservative agent differentiates it from sterile water for injection (which has no preservative and is for single-use only) and saline solutions. The "bacteriostatic" property means it inhibits the growth of most gram-positive and gram-negative bacteria that may be inadvertently introduced during repeated needle entries. This makes the 2mL vial format ideal for medications or research compounds requiring multiple, smaller doses drawn over several days.
USP-Grade Formulation: Manufactured and packaged in strict compliance with United States Pharmacopeia (USP) standards, ensuring consistent pH, sterility, and non-pyrogenicity.
Preserved with 0.9% Benzyl Alcohol: Provides reliable antimicrobial protection, permitting safe multi-dose use for up to 28 days after initial puncture when stored correctly.
Optimal 2mL Volume: The ideal size for reconstituting smaller-quantity peptides, HCG, growth hormone, or other medications where precise dosing and minimal waste are paramount.
Sterility Assurance: Terminally sterilized and sealed under a nitrogen atmosphere to guarantee sterility and stability until the moment of use.
Precise pH Balance: Formulated to maintain a pH compatible with a wide range of sensitive biological compounds, promoting stability post-reconstitution.
Clean Room Packaging: Each vial is individually packaged to maintain integrity and cleanliness.
1. Pharmaceutical & Clinical Reconstitution:
The primary use is to reconstitute lyophilized pharmaceuticals for intramuscular (IM) or subcutaneous (Sub-Q) injection. This includes, but is not limited to, medications prescribed for fertility treatments, hormone replacement therapies, and certain antibiotics supplied in powder form.
2. Research & Peptide Sciences:
In laboratory and research settings, accuracy is non-negotiable. Bacteriostatic Water 2mL is the solvent of choice for reconstituting research peptides, ensuring that the compound's activity is not compromised by contaminants or an unsuitable pH. Its multi-dose capability allows researchers to administer precise, small-volume doses from a single vial over the course of a study period.
3. Compounding Pharmacy:
Pharmacists rely on bacteriostatic water as a trusted diluent for preparing customized parenteral medications, ensuring patient-specific dosages are delivered with a sterile, reliable vehicle.
4. Multi-Dose Convenience:
For patients or protocols requiring frequent, low-volume injections (e.g., daily or bi-daily regimens), a single 2mL vial can suffice for a week or more, reducing packaging waste and cost compared to multiple single-use vials.
Important: Always follow the specific reconstitution instructions provided with your medication or research protocol. Adhere to aseptic technique.
Gather Materials: Bacteriostatic Water 2mL vial, lyophilized compound vial, alcohol swabs, syringe(s) with needle(s) of appropriate gauge.
Sanitize: Wipe the rubber stoppers of both vials thoroughly with an alcohol swab and allow to air dry.
Draw Solvent: Draw air into the syringe equal to the desired volume of bacteriostatic water (e.g., 1mL). Inject this air into the bacteriostatic water vial (to equalize pressure). Withdraw the required volume of solvent.
Reconstitute: Gently inject the bacteriostatic water into the vial containing the lyophilized powder. Aim the stream against the glass wall to avoid forceful agitation. Swirl gently or roll between palms until the powder is fully dissolved. Do not shake vigorously unless specified.
Storage: Label the reconstituted vial with the date and time. Most reconstituted medications are stable for 28 days when refrigerated (2°C to 8°C or 36°F to 46°F) due to the bacteriostatic agent. Consult specific product stability data.
NOT for Neonatal Use: Due to the benzyl alcohol content, this product is contraindicated for use in newborns. It may cause fatal "gasping syndrome."
NOT for Single-Bolus IV Injection: Bacteriostatic Water is hypotonic (has no electrolytes). It is not intended for direct intravenous infusion or as a standalone IV flush, as it can cause hemolysis (rupture of red blood cells).
Allergy Warning: Do not use if there is a known hypersensitivity to benzyl alcohol.
Aseptic Technique is Mandatory: Despite the preservative, you must always use sterile needles, syringes, and technique to minimize contamination risk.
Discard Promptly: Discard the vial immediately if contamination is suspected or if the 28-day window has passed since first puncture.
Q: Can I use sterile water or saline instead?
A: Sterile Water for Injection (without preservative) is for single-use only and must be discarded immediately after reconstitution. Bacteriostatic Sodium Chloride (0.9% benzyl alcohol) is isotonic and often used for diluting already-reconstituted solutions for injection. The choice depends on the medication's specific formulation requirements. Bacteriostatic Water is the standard for multi-dose reconstitution.
Q: Why is the 2mL size beneficial?
A: The 2mL size minimizes "dead space" and overfill waste when reconstituting small-quantity compounds. It provides enough solvent for multiple doses while being space-efficient for refrigeration.
Q: How long does an unopened vial last?
A: When stored in a cool, dry place away from direct light, unopened vials are stable until the printed expiration date, typically 1-2 years from manufacture.
Q: Can I use it for injections into IV bags?
A: No. Bacteriostatic Water is not designed for large-volume parenteral infusion. Its benzyl alcohol content and hypotonic nature make it unsuitable for direct addition to IV bags for patient infusion.
Choosing the correct solvent is a critical step that directly impacts the potency, safety, and shelf-life of valuable pharmaceuticals and research materials. Bacteriostatic Water 2mL represents the intersection of pharmaceutical rigor and practical utility. Its USP-grade quality, preserved formulation for multi-dose flexibility, and convenient size make it an indispensable tool for healthcare providers, researchers, and compounding specialists who will not compromise on standards.
Disclaimer: This product is a pharmaceutical diluent. It is intended for use only by qualified professionals or individuals under the direct supervision and prescription of a licensed healthcare provider. The information provided here is for educational purposes and does not constitute medical advice. Always verify compatibility with the specific agent you are reconstituting and follow all applicable medical or research protocols.
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