Bacteriostatic Water for Tesamorelin Research: Complete Reconstitution Protocol

Bacteriostatic water for tesamorelin research serves as the validated multi-dose diluent for reconstituting lyophilized growth hormone-releasing hormone (GHRH) analog peptides in laboratory settings, providing a 28-day sterility window through 0.9% benzyl alcohol preservation while maintaining peptide stability and structural integrity across serial withdrawals. Research-grade bacteriostatic water must meet USP <71> sterility standards and be supplied in Type I borosilicate glass with traceable lot-specific Certificates of Analysis to ensure reproducibility in tesamorelin reconstitution protocols. For research-grade supply, see BAC Water Depot's 10 mL vial catalog.

Why Tesamorelin Research Requires Bacteriostatic Water as the Primary Diluent

Tesamorelin represents a 44-amino-acid synthetic analog of human growth hormone-releasing hormone, commonly supplied as lyophilized powder requiring reconstitution before any research application. The selection of bacteriostatic water for tesamorelin research stems from three critical requirements: multi-dose sterility, peptide stability preservation, and documented compatibility with GHRH analog structures. Unlike single-use sterile water for injection (SWFI), bacteriostatic water contains 0.9% benzyl alcohol as a bacteriostatic agent, permitting multiple withdrawals from a single vial over a 28-day period while maintaining sterility between access events—a configuration essential for research protocols that involve serial sampling, dose-response studies, or multiple subjects drawn from a single reconstituted batch.

The peptide structure of tesamorelin, containing methionine, tyrosine, and other oxidation-sensitive residues, requires a diluent that minimizes chemical reactivity. Bacteriostatic water meets this requirement through its neutral pH range of 5.0–7.0 and absence of ionic species that could catalyze peptide bond hydrolysis or disulfide rearrangement. Research documented in USP monographs for peptide preparations confirms that benzyl alcohol at 0.9% concentration does not interfere with GHRH receptor binding assays, cell-based signaling studies, or downstream analytical methods such as high-performance liquid chromatography (HPLC) or mass spectrometry commonly employed in peptide research environments.

Procurement standards for bacteriostatic water in tesamorelin research demand verification of USP <71> sterility testing, which requires 14-day incubation in fluid thioglycollate medium and soybean-casein digest medium to rule out aerobic, anaerobic, and fungal contamination. Facilities producing research-grade diluents typically hold ISO 9001:2015 registration, ensuring lot-to-lot consistency in benzyl alcohol concentration, endotoxin levels (USP <85> bacterial endotoxins test), and particulate matter. BAC Water Depot vials are manufactured in an ISO 9001:2015 registered US facility and verified by three independent third-party laboratories, with per-lot Certificates of Analysis available for protocol documentation and regulatory compliance under 21 CFR 809.10 (labeling for in vitro diagnostic products used in research).

When comparing bacteriostatic water versus sterile water for tesamorelin reconstitution, the multi-dose capability becomes the deciding factor. A typical 2 mg tesamorelin vial reconstituted with 2.0 mL of bacteriostatic water yields a 1.0 mg/mL working solution; if a research protocol requires 50 µg aliquots for in vitro assays, each vial supports 40 withdrawals. Using SWFI would necessitate either single-use reconstitution (wasteful) or risk of contamination from repeated access without bacteriostatic preservation. The economic and protocol-efficiency advantages of bacteriostatic water become evident in high-throughput screening or longitudinal study designs common in biomedical research and CRO laboratories.

Reconstitution Protocol: Volume Calculations and Concentration Targets for Tesamorelin Research

Accurate reconstitution of lyophilized tesamorelin requires precise volumetric calculations to achieve target molar concentrations suitable for downstream assays. Most commercial tesamorelin research-grade peptides are supplied in 2 mg or 5 mg quantities per vial. To reconstitute tesamorelin research samples, calculate the required volume of bacteriostatic water using the formula: Volume (mL) = Mass of peptide (mg) ÷ Desired concentration (mg/mL). For example, a 2 mg vial targeted for a final concentration of 1.0 mg/mL requires 2.0 mL of bacteriostatic water; the same vial diluted to 0.5 mg/mL requires 4.0 mL.

The physical process of tesamorelin reconstitution follows a standardized lyophilized peptide protocol. First, allow both the lyophilized vial and bacteriostatic water vial to equilibrate to room temperature (20–25°C) for 15–20 minutes to prevent thermal shock and minimize condensation. Using aseptic technique in a laminar flow hood or biosafety cabinet, draw the calculated volume of bacteriostatic water into a sterile syringe fitted with an 18- to 20-gauge needle. Inject the diluent slowly down the side wall of the lyophilized peptide vial—never directly onto the peptide cake—to prevent foaming and protein denaturation from shear forces. Allow the vial to sit undisturbed for 2–3 minutes, then gently swirl (do not shake or vortex) until the peptide fully dissolves. Visual inspection should confirm a clear, colorless solution free of particulates.

Below is a reference table for common tesamorelin reconstitution scenarios in research settings:

| Vial Mass | Target Concentration | Bacteriostatic Water Volume | Resulting Aliquot Precision | Typical Application | |-----------|---------------------|-----------------------------|-----------------------------|---------------------| | 2 mg | 1.0 mg/mL | 2.0 mL | ±0.05 mg per 50 µL | Cell assays, receptor binding | | 2 mg | 0.5 mg/mL | 4.0 mL | ±0.025 mg per 50 µL | Dose-response curves | | 5 mg | 2.0 mg/mL | 2.5 mL | ±0.10 mg per 50 µL | High-throughput screening | | 5 mg | 1.0 mg/mL | 5.0 mL | ±0.05 mg per 50 µL | Serial dilution studies |

For laboratories conducting institutional procurement of bacteriostatic water, volume planning should account for the 28-day multi-dose window. A research team running weekly assays over four weeks can consolidate multiple experiments from a single 10 mL vial of bacteriostatic water (catalog # BW-10, available at $9.99 single or $7.49/vial in 10-packs), reducing waste and simplifying lot tracking. However, once a tesamorelin vial is reconstituted, the 28-day bacteriostatic window applies to that vial, not to the unopened bacteriostatic water stock.

Volumetric precision becomes critical in pharmacokinetic modeling and quantitative assays. A 2 mg tesamorelin vial reconstituted with 2.00 mL ±0.02 mL of bacteriostatic water yields a concentration error of ±1%, which propagates through serial dilutions. Research-grade volumetric pipettes or calibrated micropipettes with accuracy specifications of ±0.5% should be used for all reconstitution steps. This level of precision aligns with good laboratory practice (GLP) standards and ensures that data generated from tesamorelin research diluent preparations are reproducible across replicates and between laboratories.

Storage, Stability, and the 28-Day Multi-Dose Window for Reconstituted Tesamorelin

Once reconstituted with bacteriostatic water, tesamorelin research solutions require controlled refrigeration to maintain peptide stability and preserve bacteriostatic efficacy. The USP and FDA 21 CFR 809.10 guidelines for multi-dose vials specify that bacteriostatic water-preserved solutions remain sterile for up to 28 days when stored at 2–8°C and accessed using aseptic technique. This 28-day window is a regulatory standard rooted in sterility validation studies, not an arbitrary guideline—beyond this period, benzyl alcohol degradation and cumulative contamination risk increase, even if visual inspection reveals no turbidity or particulate formation.

Peptide stability within this window depends on both chemical and physical factors. Tesamorelin, like other GHRH analogs, is susceptible to oxidation of methionine residues, deamidation of asparagine and glutamine, and aggregation through hydrophobic interactions. Storage at 2–8°C significantly slows these degradation pathways compared to room temperature. Published stability data for similar lyophilized peptides indicate that refrigerated, reconstituted GHRH analogs retain greater than 95% purity by HPLC for 21–28 days when stored in Type I borosilicate glass vials—the same material used in BAC Water Depot's catalog products.

For laboratories requiring extended storage or archival samples, aliquoting the reconstituted tesamorelin solution into single-use cryovials and freezing at –20°C or –80°C can extend usable life beyond the 28-day refrigerated window. Freeze-thaw cycles should be minimized, as repeated temperature cycling promotes aggregation and loss of bioactivity. When thawing frozen aliquots, allow slow equilibration in a refrigerator (2–8°C) over 2–4 hours rather than using water baths or room-temperature thawing, which can create temperature gradients that denature peptides. This approach is particularly relevant for university research and biotech startups managing budget constraints and batch-to-batch experimental continuity.

Labeling of reconstituted vials must include the date and time of reconstitution, the final concentration, the lot number of the bacteriostatic water used, and the expiration date (28 days post-reconstitution). This practice ensures compliance with laboratory audits and supports data traceability in published research. For example, a vial reconstituted on June 1, 2026, at 10:00 AM using bacteriostatic water lot #BW20260515-03 (a typical BAC Water Depot lot format) would be labeled: "Tesamorelin 1.0 mg/mL | Reconstituted 2026-06-01 10:00 | Exp 2026-06-29 | BW Lot BW20260515-03." Such documentation is routine in sports science laboratories and pharmaceutical development settings where GLP standards apply.

Environmental factors also influence stability. Reconstituted tesamorelin vials should be stored upright to prevent contact between the rubber stopper and the solution, minimizing leachables. Vials should be protected from light using amber vials or aluminum foil wrapping, as UV exposure can catalyze oxidation. For facilities without dedicated peptide refrigerators, a standard laboratory refrigerator maintained at 4°C ±2°C with temperature logging is acceptable, provided the vials are stored away from the door to minimize temperature fluctuations during access cycles.

Which BAC Water Depot SKU fits this use case? Single exploratory study (1–3 vials): 10 mL single vial at $9.99 for initial validation or small-scale pilot research. Ongoing monthly research (4–10 reconstitutions): 10-pack at $74.99 ($7.49/vial) for laboratories running serial experiments or dose-response studies over several months. High-throughput or multi-PI labs (25+ vials/quarter): 25-pack at $174.99 ($6.99/vial) for established CRO laboratories or multi-investigator institutional procurement programs. Bulk research programs (100+ vials/year): Bulk program starting at $6.49/vial for sustained longitudinal studies, biotech startups scaling assay platforms, or veterinary research facilities with consistent tesamorelin or peptide reconstitution needs.

Certificate of Analysis and USP <71> Verification Before Sourcing

Procurement of bacteriostatic water for tesamorelin research must prioritize documented compliance with USP <71> sterility standards and availability of lot-specific Certificates of Analysis (CoA). The USP <71> sterility test is a pharmacopeial method requiring incubation of sample aliquots in fluid thioglycollate medium (for anaerobes and aerobes) and soybean-casein digest medium (for fungi and aerobes) at 30–35°C and 20–25°C, respectively, for a minimum of 14 days. Absence of visible microbial growth confirms sterility. This test is distinct from endotoxin testing (USP <85>), which quantifies bacterial pyrogens; both are critical for research-grade diluents used in cell culture or in vivo peptide studies.

A compliant Certificate of Analysis for bacteriostatic water should include the following minimum data fields: lot number, manufacturing date, expiration date, benzyl alcohol concentration (target 0.9% w/v), pH (USP specification 5.0–7.0), sterility test results (USP <71>), bacterial endotoxins (USP <85>, typically <0.5 EU/mL), particulate matter (USP <788>), and the name and accreditation of the testing laboratory. Third-party laboratory verification—where an independent ISO/IEC 17025-accredited lab conducts the testing—adds an additional layer of credibility and mitigates conflict-of-interest concerns inherent in manufacturer self-testing.

BAC Water Depot provides per-lot CoAs for all catalog items, with each lot tested by three independent third-party laboratories to verify USP <71> sterility, benzyl alcohol concentration, endotoxin levels, and particulate counts. This multi-laboratory verification reduces the risk of false negatives and ensures that each vial meets or exceeds the specifications required for sensitive peptide reconstitution applications. Researchers can access CoAs via the website or request them during checkout; lot numbers are printed on each vial label, enabling full traceability from raw material to final packaged product.

Regulatory context under 21 CFR 809.10 requires that in vitro diagnostic products (IVDs) and research reagents bear labeling sufficient to ensure safe and effective use. For bacteriostatic water marketed for research and laboratory use, this includes the statement "For Research Use Only — Not for Human or Veterinary Use," prominence of the lot number, and clear indication of the bacteriostatic agent (0.9% benzyl alcohol). Suppliers who omit CoAs, fail to provide lot traceability, or lack clear research-use-only labeling may not comply with FDA regulations and pose supply-chain risk to laboratories subject to audit by institutional review boards (IRBs), animal care and use committees (IACUCs), or granting agencies.

When evaluating suppliers, laboratories should verify ISO 9001:2015 registration or equivalent quality management system certification. ISO 9001:2015 ensures that the manufacturer maintains documented procedures for raw material qualification, in-process testing, final release criteria, and corrective/preventive action (CAPA) systems. BAC Water Depot operates from an ISO 9001:2015 registered US facility, providing additional assurance of process consistency and product reliability across production lots. For independent researchers or small laboratories without dedicated procurement departments, these quality signals simplify vendor qualification and reduce the administrative burden of validating each new supplier.

Price transparency and volume-based pricing also factor into procurement decisions. Single 10 mL vials of research-grade bacteriostatic water retail at $9.99, with volume discounts reducing unit cost to $7.49/vial (10-pack), $6.99/vial (25-pack), and from $6.49/vial in bulk programs. Shipping is same-day for orders placed before 2:00 PM ET, with free shipping on orders over $250 and a flat $15.99 fee for orders below that threshold. For budget-conscious laboratories or grant-funded projects, aligning procurement with volume tiers can reduce per-experiment costs while maintaining CoA documentation and USP compliance.

Diluent Alternatives and Why Bacteriostatic Water Remains the Standard for Tesamorelin

While several sterile diluents exist—including sterile water for injection (SWFI), normal saline (0.9% sodium chloride), and specialty solvents such as dimethyl sulfoxide (DMSO) or acetic acid—bacteriostatic water remains the primary standard for tesamorelin reconstitution due to its unique balance of multi-dose sterility, peptide compatibility, and regulatory validation. Understanding the limitations of alternative diluents clarifies why bacteriostatic water for tesamorelin research is specified in most peptide manufacturer instructions for use (IFU) and academic protocols.

Sterile water for injection (SWFI) is the most common alternative. It is chemically identical to bacteriostatic water—purified water meeting USP monograph specifications—but lacks the 0.9% benzyl alcohol preservative. SWFI is intended for single-use applications and must be discarded immediately after withdrawal, even if volume remains in the vial. For tesamorelin research involving multiple assays or serial sampling, SWFI imposes logistical and cost burdens: each reconstitution event requires a fresh peptide vial, increasing reagent consumption and experimental variability. A detailed comparison is available at bacteriostatic water versus sterile water.

Normal saline (0.9% NaCl) is another frequent consideration. While isotonic and suitable for some peptide formulations, saline introduces chloride ions that can alter peptide solubility and increase ionic strength, potentially affecting electrostatic interactions in receptor-binding assays or enzymatic studies. For tesamorelin, which contains multiple charged residues, the ionic environment can influence secondary structure and aggregation propensity. Saline also lacks bacteriostatic preservation, reverting to single-use constraints. More context is provided at bacteriostatic water versus saline.

Dimethyl sulfoxide (DMSO) is occasionally used for highly hydrophobic peptides or small-molecule reconstitution, but it is incompatible with most GHRH analogs. DMSO is a polar aprotic solvent with high membrane permeability, which can denature peptides, interfere with cell viability assays, and introduce solvent peaks in analytical HPLC. Acetic acid (typically 0.1–1% v/v) is used for peptides prone to aggregation at neutral pH, but tesamorelin's isoelectric point and solubility profile do not require acidic conditions, making bacteriostatic water the simpler, validated choice. Additional solvent comparisons are covered at bacteriostatic water versus DMSO and bacteriostatic water versus acetic acid.

Deionized water and distilled water are non-sterile and contain variable microbial and particulate loads, making them unsuitable for any injectable or cell-culture application. Even in non-invasive research contexts, the lack of sterility introduces uncontrolled variables that compromise reproducibility. Detailed discussions are available at bacteriostatic water versus distilled water and bacteriostatic water versus deionized water.

Tap water, Ringer's solution, D5W (5% dextrose in water), and propylene glycol each carry specific contraindications for peptide reconstitution: tap water contains chlorine, chloramines, and microbial contamination; Ringer's solution is a complex electrolyte formulation unsuitable for neutral peptide diluents; D5W introduces reducing sugars that can participate in Maillard reactions with peptide amines; and propylene glycol is a viscous solvent incompatible with aqueous peptide chemistry. These alternatives are comprehensively reviewed at bacteriostatic water versus tap water, bacteriostatic water versus Ringer's solution, bacteriostatic water versus D5W, and bacteriostatic water versus propylene glycol.

For laboratories sourcing diluents, the decision matrix prioritizes three factors: sterility validation (USP <71>), multi-dose preservation (benzyl alcohol 0.9%), and peptide compatibility (neutral pH, minimal ionic species). Bacteriostatic water uniquely satisfies all three criteria, supported by decades of use in pharmaceutical formulation and validated in USP monographs and FDA guidance. Researchers seeking comprehensive diluent guidance can consult the bacteriostatic water buying guide and knowledge base for protocol-specific recommendations.

Handling, Safety, and Aseptic Technique for Research-Grade Bacteriostatic Water

Aseptic technique is non-negotiable when handling bacteriostatic water for tesamorelin research. Even though the diluent contains 0.9% benzyl alcohol as a bacteriostatic agent, this preservative inhibits microbial growth only after initial sterility is established—it does not sterilize contaminated solutions. Breaches in aseptic technique during vial access, syringe filling, or peptide reconstitution can introduce bacteria, fungi, or particulates that compromise experimental validity and, in the case of in vivo studies, pose biosafety risks.

Standard aseptic procedure for accessing bacteriostatic water vials includes the following steps. First, perform hand hygiene with 70% isopropyl alcohol or antimicrobial soap. Work in a laminar flow hood (Class II Type A2 or B2 biosafety cabinet) when possible, particularly for cell culture or in vivo applications. Remove the plastic flip-off cap from the vial and disinfect the rubber stopper with a 70% isopropyl alcohol swab, allowing 15–30 seconds of contact time and air drying to ensure alcohol evaporation (residual alcohol can denature peptides). Use a sterile syringe with a new, sterile needle (18–20 gauge for withdrawal) to pierce the stopper. Withdraw the required volume, then replace the needle with a fresh sterile needle if transferring to the peptide vial, minimizing coring and particulate transfer.

Benzyl alcohol at 0.9% concentration is generally recognized as safe (GRAS) for research applications, but it is a mild skin and eye irritant. Laboratory personnel should wear nitrile or latex gloves and safety glasses when handling vials. In the event of skin contact, rinse immediately with copious water. Benzyl alcohol is metabolized to benzoic acid and excreted renally in mammalian systems, which is relevant for in vivo pharmacokinetic studies but does not affect in vitro cell assays at the dilute concentrations typical in reconstituted peptide solutions (final benzyl alcohol concentration <0.05% in most assays after dilution).

Disposal of expired or unused bacteriostatic water should follow institutional hazardous waste protocols. Although benzyl alcohol is biodegradable and classified as a low-hazard chemical, vials may be considered pharmaceutical waste depending on local regulations. Empty or partially empty vials should be placed in designated pharmaceutical waste containers, not poured down drains or discarded in regular trash. For laboratories subject to EPA or state environmental regulations, maintaining a waste log that documents volume, lot number, and disposal method supports compliance audits.

Long-term storage of unopened bacteriostatic water vials should occur at controlled room temperature (20–25°C) away from direct sunlight and heat sources. Vials have a manufacturer-assigned expiration date (typically 2–3 years from production) based on stability studies demonstrating maintained sterility, benzyl alcohol concentration, and absence of particulate formation. Refrigeration of unopened vials is unnecessary and can cause condensation on labels or promote microbial growth if vials are repeatedly moved between temperature zones. Once opened, vials should be stored at 2–8°C and used within 28 days, as previously discussed.

For high-volume laboratories or institutional procurement programs, establishing a vial tracking system (spreadsheet or laboratory information management system, LIMS) that logs lot numbers, open dates, and expiration dates ensures that no vial is used beyond its sterility window. This practice is especially important in multi-user facilities where multiple researchers access common reagent stocks. A simple tracking template might include columns for vial ID, lot number, first access date, expiration date (first access + 28 days), and user initials, enabling rapid audit and reducing the risk of non-compliant use.

Common Mistakes to Avoid

• Using expired or out-of-window bacteriostatic water: Once a vial is first accessed, the 28-day multi-dose window begins regardless of the original expiration date printed on the label; laboratories must track the access date, not just the manufacturer expiration.
• Shaking or vortexing reconstituted tesamorelin: Vigorous agitation introduces shear forces that denature peptides and create foam, trapping air bubbles that interfere with accurate volumetric measurement and increase oxidation risk.
• Injecting diluent directly onto lyophilized peptide cake: Direct injection onto the powder causes splashing, foaming, and incomplete dissolution; always inject bacteriostatic water down the vial wall and allow slow, gentle mixing.
• Storing reconstituted vials at room temperature: Peptide degradation accelerates significantly above 8°C; failure to refrigerate reconstituted tesamorelin reduces stability from 28 days to as little as 48–72 hours.
• Reusing needles or syringes across multiple withdrawals: Each vial access should use a fresh sterile needle to prevent coring the rubber stopper, introducing particulates, or cross-contaminating vials with residual peptide or buffer from prior use.
• Freezing bacteriostatic water before use: Freezing can cause vial breakage if expansion is constrained, and repeated freeze-thaw cycles may alter benzyl alcohol distribution or introduce micro-cracks in glass that compromise sterility.
• Sourcing bacteriostatic water without a Certificate of Analysis: Absence of lot-specific CoA means sterility, benzyl alcohol concentration, and endotoxin levels are unverified, introducing uncontrolled variables into research and risking non-compliance with institutional or regulatory standards.
• Mixing bacteriostatic water with incompatible solvents: Combining bacteriostatic water with DMSO, ethanol, or other organic solvents can precipitate peptides, denature proteins, or create biphasic solutions that are impossible to measure accurately.

People Also Ask

What is the shelf life of reconstituted tesamorelin in bacteriostatic water?

Reconstituted tesamorelin in bacteriostatic water remains stable and sterile for up to 28 days when stored at 2–8°C and accessed using aseptic technique. This 28-day window is a regulatory standard based on USP multi-dose vial sterility validation studies and applies universally to bacteriostatic water-preserved solutions, independent of the specific peptide. Beyond 28 days, sterility cannot be guaranteed even if the solution appears clear.

Can I use sterile water instead of bacteriostatic water for tesamorelin?

Sterile water for injection (SWFI) can be used for single-use reconstitution of tesamorelin, but it lacks the 0.9% benzyl alcohol preservative that permits multi-dose access over 28 days. If you reconstitute with SWFI, the entire vial must be used immediately or discarded, making it impractical for research protocols requiring serial withdrawals or multiple aliquots from a single reconstituted batch. For multi-dose applications, bacteriostatic water is the validated standard.

How do I calculate the correct volume of bacteriostatic water for tesamorelin reconstitution?

Divide the mass of lyophilized tesamorelin (in milligrams) by your target concentration (in mg/mL) to determine the required volume of bacteriostatic water in milliliters. For example, a 2 mg vial reconstituted to 1.0 mg/mL requires 2.0 mL of bacteriostatic water (2 mg ÷ 1.0 mg/mL = 2.0 mL). Use calibrated pipettes or volumetric syringes with ±0.5% accuracy to ensure concentration precision.

What is the difference between bacteriostatic water and normal saline for peptide reconstitution?

Bacteriostatic water is purified water containing 0.9% benzyl alcohol as a preservative, providing multi-dose sterility for 28 days, whereas normal saline is 0.9% sodium chloride in water and lacks bacteriostatic preservation unless explicitly formulated with benzyl alcohol. Saline introduces ionic species that can alter peptide solubility and stability, making bacteriostatic water the preferred diluent for tesamorelin and other GHRH analogs where neutral pH and minimal ionic strength are required.

Where can I verify the Certificate of Analysis for bacteriostatic water?

Reputable suppliers of research-grade bacteriostatic water provide per-lot Certificates of Analysis (CoA) that document USP <71> sterility testing, benzyl alcohol concentration, pH, endotoxin levels, and particulate counts. BAC Water Depot publishes CoAs for all lots on the website and includes lot numbers on each vial label, enabling full traceability. Researchers should request CoAs during procurement and verify that testing was performed by independent, accredited third-party laboratories.

Is bacteriostatic water safe for in vivo tesamorelin research studies?

Bacteriostatic water containing 0.9% benzyl alcohol is widely used in pharmaceutical formulations and research settings for multi-dose vials. However, benzyl alcohol is metabolized to benzoic acid and may accumulate in neonatal or small-animal models with immature hepatic function. For in vivo tesamorelin research in adult animal models, bacteriostatic water is generally safe and validated; for neonatal studies or high-frequency dosing in small rodents, consult IACUC protocols and consider single-use SWFI if benzyl alcohol exposure is a concern.

About BAC Water Depot: Research-grade bacteriostatic water for qualified research institutions and laboratory buyers. ISO 9001:2015 registered US facility, verified by three independent testing laboratories, per-lot Certificate of Analysis. Same-day US shipping before 2pm ET. Browse the catalog → · For research and laboratory use only — not for human or veterinary use.

Last reviewed: 2026-06-19